DUBUQUE, Iowa (AP) -- The search for a man believed to have gone missing in the Mississippi River south of Dubuque has changed from a rescue to a recovery operation.

Key West Fire Chief Brian Arnold told the Dubuque Telegraph-Herald that crews were dragging the river Saturday in hopes of finding the body of the 30-year-old man.

Arnold says the man had been camping with family at Massey Marina Park. He was last seen about 3:30 a.m. Saturday while fishing from the shore.

Sergeant Tom Reittinger with the Dubuque County Sheriff's Department says family members reported that man had been drinking and that his clothes were found near his fishing spot.

Authorities say the man recently moved to Dubuque. His name has not been released.