A man is in serious condition in hospital after he was stabbed in the torso in downtown Toronto early on Tuesday morning.

Toronto police say they were called to a stabbing incident on Yonge Street between Wellesley and Dundonald streets at 1:18 a.m.

They arrived to find a naked unconscious man lying in the street, suffering from a stab wound to his upper torso.

Police said that after becoming combative with first responders, he was later rushed to hospital in serious condition.

No suspect information was made available.

Police say the victim is not cooperating with investigators.