MANILA – The second suspect in the fatal stabbing of an architecture student from Adamson University earlier this month was found dead in his detention cell Sunday, police confirmed Monday.

Superintendent Oscar Albayalde, the National Capital Region Police Office (NCRPO) chief, said Reynold Clave was found unconscious by a fellow detainee at the Taguig City police station.

Clave was declared dead on arrival at a hospital at 10:45 p.m., Albayalde said. Initial findings show the suspect died of “medical complexities” including heart attack.

Clave was arrested on October 15, a day after after he and another suspect repeatedly stabbed student Nick Russel Oniot, who was on his way home to Barangay Central Signal Village in Taguig.

CCTV footage of the crime showed the two ganging up on Oniot, with one suspect stabbing him multiple times.

Marvin Bernardo, the other suspect, was earlier killed after allegedly trying to evade arrest.

Bernardo was a former convict while Clave was an alleged drug dealer in Barangay Central Signal who was also tagged in several robbery hold-up incidents in Pasay and Pasig, police said.

The victim’s family earlier decried the lack of concern displayed by bystanders and motorists who witnessed the crime. Oniot’s father, Renato, said he cannot accept the fact that some people only watched while his son was being attacked.

• 'Walang nagmalasakit,' cries dad of Adamson student stabbed multiple times

Oniot, who sustained 18 stab wounds, was laid to rest on Saturday.