Peterborough police arrest two of three suspects in December homicide of 33-year-old man

Police continue to search for 44-year-old Michael Waterman, wanted for second-degree murder

44-year-old Michael Waterman of Peterborough is wanted for second-degree murder in connection with the death of a 33-year-old man in downtown Peterborough on December 6, 2025. (Police-supplied photo)
44-year-old Michael Waterman of Peterborough is wanted for second-degree murder in connection with the death of a 33-year-old man in downtown Peterborough on December 6, 2025. (Police-supplied photo)

Peterborough police have arrested two of three suspects wanted in a connection with the homicide of a 33-year-old man in downtown Peterborough earlier in December, and are continuing to search for the third suspect.

At around 6 a.m. on Saturday, December 6, officers were called to an apartment building near Brock and Aylmer streets where they found a severely injured man in an apartment. Despite life-saving efforts, the victim was pronounced dead at the scene.

Through investigation, police have identified three suspects — all Peterborough residents — and obtained warrants for their arrest.

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On Thursday (December 18), officers with the Peterborough police’s investigative services unit and Belleville police’s tactical team executed a warrant at a residence in Belleville, where they arrested 28-year-old Peter Pople and charged him with second-degree murder.

On Thursday night at 8 p.m., police located 29-year-old Kaya Coughlin at Trinity Community Centre in Peterborough, where she was arrested and charged with manslaughter.

Both Pople and Coughlin are being held in custody for court appearances on December 19.

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“I would like to recognize the tenacity and exceptional work of our officers in locating these two suspects,” said Peterborough police chief Stuart Betts in a media release. “It has required hundreds of hours of investigation to ensure these individuals were located and taken into custody. I also extend my appreciation and thanks to the Belleville Police Service for their support in helping our Investigators locate and arrest a suspect in their city.”

Police are continuing to search for a third suspect, 44-year-old Michael Waterman, who is wanted for second-degree murder.

Anyone with information is asked to call Peterborough police at 705-876-1122 ext 555, or anonymously through Crime Stoppers at 1-800-222-8477 or at stopcrimehere.ca.