Kent Carpenter, a 73-year-old American biologist and adjunct professor at Silliman University, was shot and killed in his home in Dumaguete City, Philippines, on Sunday. Police are investigating the incident as a murder, which they believe began as a robbery.

Authorities stated that three men broke into Carpenter's home around 11:30 p.m. during which one of the intruders allegedly shot Carpenter in the head. The suspects also reportedly tied up Carpenter's girlfriend and sexually assaulted her before fleeing the scene with a laptop, cash, and a backpack.

The suspects remain at large, and local police have launched a special investigation, including reviewing CCTV footage, interviewing witnesses, and reconstructing the suspects' movements. "We strongly condemn this senseless act of violence. I have directed our investigators to exhaust all legal means to identify and apprehend those responsible at the soonest possible time," said Regional Director Police Brigadier Gen. Romano Cardiño in a statement. He added, "We assure the victim’s family, the community, and our foreign visitors that this case is being treated with utmost urgency, and no effort will be spared until justice is served."

Carpenter was a highly respected ichthyologist who dedicated decades to studying fish biodiversity in the Philippines. He collaborated with Silliman University since 1976 and co-authored a 2005 study identifying the Verde Island Passage as the "center of marine shore fish biodiversity." His work significantly advanced the global understanding of Philippine marine biodiversity.

Silliman University issued a statement acknowledging Carpenter's "groundbreaking contributions that transformed global understanding of Philippine marine biodiversity." The Philippine Association of Marine Science (PAMS) also released a statement condemning the violence and urging a swift, thorough, and transparent investigation. PAMS highlighted Carpenter's early work as a U.S. Peace Corps volunteer in the 1970s, where he helped train the country's first coral reef science team and contributed landmark papers on reef fisheries management.

"Dr. Carpenter devoted his life to protecting the Philippines' marine heritage. We owe it to him to honor that legacy by continuing his work and demanding justice for his tragic and untimely death," PAMS stated. The U.S. Embassy in Manila was contacted for further comment.