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The man responsible for the 10-hour hostage-taking crisis at the Greenhills shopping center in San Juan City is now under police custody.

Police tackled and pinned down the gunman who took several hostages, while he was speaking with witnesses and the media.

The suspect earlier released all hostages before talking about the supposed exploitation of mall security personnel.

"Pinayagan muna natin siya na magsalita sapagkat 'yun naman ang talagang kaniyang kanina pa hinihiling," San Juan City Mayor Francis Zamora said.

"At kita ninyo naman nung nagsasalita siya kumalma na rin eh. Kung base pa lang sa usapan namin kanina ang gusto niya lang mangyari mailabas ang kaniyang sama ng loob at malaman kung ano talaga ang nangyari sa kaniya."

After airing his grievances, authorities pinned down the disgruntled former security guard.