Warrant Issued for Whitby Man Following Aggravated Assault; Second Suspect Unidentified

Durham Regional Police have issued a warrant for Tristan Kalijundic, 39, of Whitby, in connection with an aggravated assault at a residence in Whitby on August 29, 2025. Police reported that officers responded to a call in the area of Annes Street and Jermyn Street, where they found an adult male with serious injuries. The victim was transported to a Toronto-area trauma centre and is in stable condition, according to police.

Police stated they believe this was an isolated incident and that there is no ongoing threat to public safety. While Kalijundic has been identified as a suspect, a second individual is still being sought. Police describe the second suspect as a White male with a medium build, standing between 5'8" and 5'10", and approximately 40 years old.

Police have requested anyone with information about the incident to contact Detective Constable Farrow of Central West Division. Anonymous tips can also be submitted to Durham Regional Crime Stoppers, and tipsters may be eligible for a $2,000 cash reward, police said.

Police noted that these allegations have not been proven in court.