The man told authorities he was from Florida, though it's unclear why he was swimming from Canada back to the U.S.

A man trying to swim across the Detroit River from Windsor to Detroit was rescued Monday night, according to a riverboat mail company.

A United States mail boat rescued a man trying to swim from Canada to Detroit overnight, the Michigan-based crew said. While preparing to make a delivery Sept. 23, the crew of the J.W. Westcott II heard an emergency broadcast about a man in the Detroit River and set out to help find him, a crew member told WXYZ.

DETROIT – A 30-year-old man was rescued from the Detroit River after reportedly attempting to swim from Canada to the United States, 7 News Detroit reports.

DETROIT – A man was rescued by a mail boat crew late Monday night after attempting to swim across the Detroit River.

DETROIT (FOX 2) - Crew aboard the J.W. Westcott, the only floating post office in the world, saved another person late Monday.