A man is dead after he was found without vital signs in a bus shelter at Yonge-Dundas Square early Tuesday after a night when temperatures dipped to minus double digits.

The man, believed to be in his 50s, was taken to hospital after he was found slumped in a bus shelter at Yonge-Dundas Square.

Police at the scene said the freezing temperatures undoubtedly played a role in the death of the man, who was dressed only in jeans and a T-shirt.

Police say the man was also wearing a hospital bracelet.

He was transported to St. Michael's Hospital where he was pronounced dead.

Temperatures reached a low of -14 C overnight with a wind chill around -18 C.

In another incident on Monday, a homeless man was found dead inside a truck at a west-end Toronto shipping yard on a day when temperatures plunged and the wind chill made it feel colder than -21 C.

The city has not issued an extreme cold weather alert, which opens up emergency beds at city shelters. The medical officer of health issues the alerts when overnight temperatures are forecast to reach -15 C or colder.

With Files from The Canadian Press