Durham Regional Police say they are looking for a suspect after a man was stabbed at an apartment in Oshawa on Tuesday morning.
Police said they were called to Simcoe Street South and Bagot Street for reports of a stabbing at around 6:17 a.m.
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Investigators said they found a male victim with serious injuries. He was taken to a trauma centre in Toronto, police said.
Officers are searching for the suspect but did not provide a suspect description.
Anyone with information is asked to contact police or Crime Stoppers anonymously.