Police and Coast Guard are searching for a man who reportedly jumped off the docks at midday on Monday near the downtown Juneau library.
Sgt. Dave Campbell of the Juneau Police said police believe they know who the man is but would contact his nearest kin before releasing his name.
Campbell said three people called around noon Monday to report that someone had jumped off the docks into Gastineau Channel. One caller saw the incident through binoculars from a nearby apartment window.
Police responded in time to see the man naked in the water. An officer threw a life ring to the man, but he swam away from it. A Coast Guard member jumped in and tried to take the life ring to the man, but the man swam away, according to Campbell.
A pile of clothes and a backpack left on the docks likely belonged to the man, Campbell said.
The Juneau station of the Coast Guard sent a 47-foot motor lifeboat and a 25-foot response boat, Chief Petty Officer Levi Read said. Alaska State Troopers also responded.
Campbell said he did not know whether drugs or alcohol were involved.