MANILA – Celebrities and fans took to social media to mourn the death of OPM legend Rico J. Puno early Tuesday.

Puno died of cardiac arrest, according to his daughter Tosca Camille Puno-Ramos.

The veteran singer underwent open heart surgery in 2015. He underwent an angioplasty last December 2017 and recently got a new pacemaker.

Before his death, Puno shared his excitement to topbill the concert "Sana Tatlo Ang Puso Ko" with comediennes Marissa Sanchez and Giselle Sanchez.

Anna Puno, the singer's sister-in-law, expressed shock after hearing news of Puno's death.

"Numbed with grief, I would like to call on all entertainers in the OPM Industry as well as his worldwide fans to stop for a moment and say a prayer to one of the most respected singers in the country," she said in an Instagram post.

"I cannot help but say it was serendipitous that Starmedia prepared a solo 40th Anniversary concert for him and a US tour with the OPM stalwarts and colleagues just recently. Little did I know that this is his final bow in the live entertainment world. We will forever miss the Total Entertainer...but his songs will forever be cherished in our hearts."

Rest In Peace, Rico J. Puno. Your distinctive voice that lent itself to so much of the music of my childhood will not be forgotten.

To Tito Rico’s family, my deepest condolences.

— Lea Salonga (@MsLeaSalonga) October 29, 2018

Condolence to my friend, Rox @roxpuno🙏❤️ His dad/OPM icon, Rico J.Puno passed away. I fondly remember Rico J singing at our family parties because he was my… https://t.co/6i66ZmVuxI

— Dolly Anne Carvajal (@dollyannec) October 29, 2018

#ricojpuno we will miss you! Now that you are in heaven, behave! We love you! @starmediaentPH https://t.co/csx1Cl3XU9

— martin nievera (@4eversinging4u) October 29, 2018

Very very Sad news😔💔I’m still in shock,,,RIP Rico J.Puno 😢#OPMKing #RicoJPuno #corics #OPMmusic

— Jessa Zaragoza (@iamjessaz13) October 29, 2018

R.I.P. to one of OPM’s legends, the one & only Rico J. Puno 😢 Thank you for the laughter, the music, all the advice when i was just starting in this industry, for making me a part of your… https://t.co/1UD9zMYu0b

— Jenine Desiderio (@jeninedesiderio) October 29, 2018

R.I.P Rico J Puno.
A kind and humble man. You will always be rememberd for the great music you blessed us with. If it wasn’t for your song “May Bukas Pa” I would not be where I am today.
Love and Prayers to family and friends 🙏🏻❤️ pic.twitter.com/KJBbCm11qp

— BAILEY MAY (@BaileyMayNU) October 29, 2018

I am the writer for the upcoming MUSIC and LAUGHTER concert sa Solaire theater, which Rico J. Puno is one of the artists and he is the one who conceptualized it. i was looking forward to work with a legend. I am truly sad that he passed away. RIP Sir Rico J. Puno.

— Chad Kinis (@chadkinis) October 29, 2018

RIP Rico J. Puno, definitely a Filipino music legend. Your distinctive voice and music I grew up with will bever be forgotten. Your humor and fun persona will be missed.

— JV Ejercito (@jvejercito) October 29, 2018

RIP Rico J Puno 🙏🏽 you made us laugh so much and you really did inspire us young ones whenever you’d get on that stage and sing your heart out #respect

— MICA JAVIER (@DaRealMICA) October 29, 2018

I grew up with your songs dear koriks. You will forever be my icon. Rest in peace Rico J! #namamasyalpasaluneta

— kim atienza (@kuyakim_atienza) October 29, 2018

Rest in peace sir Rico J 😔🙏🏻 https://t.co/MpmU6dUvpZ

— Klarisse De Guzman (@Klarissedguzman) October 29, 2018

I am dumbfounded at the moment. I am still awake, since i am learning the song “MAGKASUYO” for our DUET! I got this news just now from my bestfrnd @iamjessaz13 from the account of our… https://t.co/lDOz1JEuek

— Marissa Sanchez (@TrulyMarissa) October 29, 2018

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Maraming salamat Yangku RJP...Your music and memories will stay forever... May you rest in peace with our Creator... 🙏🙏🙏

A post shared by Sample King 👑🇵🇭 (@jhonghilario) on Oct 29, 2018 at 3:30pm PDT

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This man was the reason I wanted to be a singer. His voice, his charm, wit and entertainment style has wowed millions of opm fans all over the globe. I am deeply saddened to hear that he has now joined our creator. More than being my idol, he was a dear friend. Everybody loved and adored the great Rico J. Puno. Rest now rico. The whole country applauds you for your contributions as a singer, and entertainer and as a public servant. #ricojpuno

A post shared by Ogie Alcasid (@ogiealcasid) on Oct 29, 2018 at 2:53pm PDT

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Rest in His peace kapitan. I’m in total shock at this news. 😔💔😢🙏🏼

A post shared by Gary Valenciano (@garyvalenciano) on Oct 29, 2018 at 3:58pm PDT

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I grew up with you. Actually singing in the same concerts that Vicor and Blackgold put together for all their artists, with you. I had no idea then that I was singing with one who would become a true LEGEND. The Total Entertainer, the funny, always down-to-earth guy who was always humble and in the forty years I’ve known you, never, ever changed or let success go to your head. I hated when you would make green jokes but loved that they made people laugh. You were a true gem of a talent, and person, dearest Kuya Rico. We and the whole entertainment industry have just been turned upside down by your passing. Thank you for being so sweet and loving to me. Daddy loved you and I know you loved him too and made him laugh, so thank you also for that. Mahal kita, Kuya. Salamat sa sinabi mo not just once na I had “one of the prettiest faces.” Muntik na akong maniwala pero mukhang seryoso ka naman. Huwag masyadong bastos ang jokes sa taas ha Kuya baka ihagis ka ni Lord pababa hala! Seriously, we will never be the same...we miss you already. Rest in peace, the great RICO J. PUNO. Our most loving and deepest condolences to your family. May God give them strength during this painful time. I will miss you dearly. I love you.

A post shared by ActorSingerPresenter (@reallysharoncuneta) on Oct 29, 2018 at 5:31pm PDT

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Rest In Peace Yangku🙏🏼😞

A post shared by John Paulo Q. Prats (@johnprats) on Oct 29, 2018 at 5:24pm PDT

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Nakakalungkot na balita, naalala ko pa Buhat ang unang awitin na inawit ko sa harap ng maraming tao. I was 6 years old. Maraming Salamat Rico J Puno 🙏🏻

A post shared by reginevalcasid (@reginevalcasid) on Oct 29, 2018 at 4:51pm PDT

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Gusto kong magpasalamat sa diyos at sa abs-cbn sa pagkakataon na binigay sa akin na makasama ka sa show at makilala ka ng lubusan .... isang taong henyo sa komedya at alamat sa kantahan ... mamimiss ko ang mga nakakatawa mong jokes at minsan e wala rin namang kwenta 😂 .... parati ko sinasabi sayo na ikaw lang ang inidolo ng kapatid kong bunsong lalake na namatay na rin nung bata pa sya dahil ang paborito nyang kanta ay ang "macho gwapito ".... naalala ko na minsan antok na antok ako sa taping natin at inofer mo ang condo mo na malapit sa abs para makapagpahinga ako kahit sandali lang ... napa ka maaalahanin mong tao ... at para sa akin d pa uso ang pormahan na walang medyas ang sapatos e ... pinauso mo na ... nawalan ng isang alamat ang OPM sa pag panaw mo yangku .... nawalan kame ng mahal na kapatid at kaibigan sa industriya ...magpahinga ka na yangku Rico .... mahal ka namin .... mahal kita at higit sa lahat ma mimiss kita at ang matindi mong mala anghel mong boses .... maraming salamat yangku rico ....RIP ....#IYAKAKO ... #VERYSADDAY

A post shared by John S. Estrada (@john__estrada) on Oct 29, 2018 at 7:39pm PDT

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REST IN PEACE KUYA RICO .. salamat sa mga nakakatawang pag sasama naten .. ayan dapat may show pa tayo sa feb 13... nabawasan nako ng partner sa show .. 😢GOD bless your soul kuya .. 🙏🏼

A post shared by Martina Eileen D.A. SIBAYAN (@msaiaidelasalas) on Oct 29, 2018 at 7:41pm PDT

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Rest in Peace Senyor🙏🏼🙏🏼🙏🏼 #ricojpuno #opmlegend

A post shared by Aristotle Pollisco (@glocdash9) on Oct 29, 2018 at 7:48pm PDT

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Salamat Rico J. Puno.

A post shared by Ogie Alcasid (@ogiealcasid) on Oct 29, 2018 at 7:52pm PDT

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Tito Rico, ito po ang huling beses na nakatrabaho ko kayo bilang tatay ko sa Ang Probinsyano. Nakakagulat lang po. Ang dami niyo pa pong planong concert na gustong gawin dahil yan po ang kinukwento niyo palagi sa amin sa dressing room pag nasa taping noon. Maraming maraming salamat po Tito sa pagpapatawa sa set sa aming lahat, sa lahat ng mga awitin niyo na habang buhay nasa puso namin. We love you Tito Rico. 😥 Pahinga napo kayo. #RicoJPuno #KingofOPM #TotalEntertainer

A post shared by Angeline Quinto (@loveangelinequinto) on Oct 29, 2018 at 9:03pm PDT

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Total entertainer... yan ang tawag kay rico j. Puno.. tama naman dahil hindi lang basta kumakanta, talagang performer... magkasama lang tayo 2 weeks ago SA show.. tulad ko makulit At sensya na mejo “naughty” ... pero yan ang style nya na nakasanayan na NG lahat.. yan ang hinahanap NG tao... komedyante na At magaling na singer.. konsehal... hurado.. host.. at napaka swerte ko kc ilang beses na kami nagkasama SA mga concerts at shows.. nanalo pa nga kami NG award matagal na bilang “best performance (collaboration) in a concert” .. na hindi ko makakalimutan kc natawa kami dahil walang script at kulitan lang ang concert na yon pero nanalo.. maharot sa entablado At kaibigan At masaya kasama. SA totoo lang hindi lahat kaya syang sakyan dahil SA kanyang kaharutan.. pero yon ang hindi ko makakalimutan SA kanya, malamang dahil ganon din ako,. Salamat SA mga alaala corics, sa mga KLASIK Mong mga kanta na binigyan mo ako NG pagkakataon na makanta kasama mo. Macho gwapito, Salamat SA kulitan. Ma mi miss ka NG lahat dahil nag iisa ka. “Ang iyong pagdaramdam, Idalangin mo sa Maykapal, Na sa puso mo ay mawala nang lubusan” — MAY BUKAS PA 🙏🙏🙏😞

A post shared by Carmela Brosas (@kbrosas) on Oct 29, 2018 at 5:45pm PDT

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Salamat sa mga ngiti at awitin na nagpasaya sa lahat ng nagmamahal sayo kuya corics ❤️ ma miss namin ang mga kakulitan mo na napaka natural lang ❤️ pasayahin mo sila sa langit 😊 mahal ka namin... isang karangalan na nakasama kita sa napaka sayang noontime show dati kahit saglit lang 😊 #ripricojpuno

A post shared by Mayette (@itspokwang27) on Oct 29, 2018 at 5:05pm PDT