First responders say they pulled a man from a Norwalk stream this afternoon after a father and son found him floating.

The man?s condition is unknown, according to authorities.

Norwalk officials say first responders tried to revive the man, believed to be in his 50s, for more than an hour. Doctors at Norwalk Hospital continued the effort, mindful that an adult can be revived up to one hour after losing consciousness in cold water.

Authorities say the man had no identification on him and may be homeless.