A man has been critically injured in a stabbing in downtown Toronto, and police say a suspect is in custody.

Officers received a call for a stabbing at Yonge and Dundas streets at 4:42 p.m.

When they arrived, police say a man in his 20s was located suffering from stab wounds. He was transported to the hospital with life-threatening injuries.

Meanwhile, police say a 28-year-old was arrested in connection with the incident.

It is unclear what led to the stabbing.