The Philippine National Police (PNP) has declared the killing of American marine biologist Kent Edward Carpenter as 'case solved' after identifying a sixth suspect.Col.

Allen Rae Co, PNP public information office chief, revealed that the suspect is the brother of alias 'Eden,' who is currently being hunted by Negros Oriental police.The four suspects in custody have undergone inquest proceedings, while the two at large will face regular charges.Carpenter, known for his research on the Verde Island Passage, was murdered at his home on July 12.

Mark Bucog, Jal Filipinas, and Eric Lenihan are accused of robbery with homicide, with Bucog allegedly shooting Carpenter while Filipinas sexually assaulted the scientist's partner, now a key witness.The PNP stated there is no work-related motive in the killing.The case highlights the complexity of criminal investigations and the importance of forensic evidence in solving high-profile murders.