Authorities continued searching Monday for the body of a Colorado man assumed to have drowned Saturday at Lake Allatoona.

Joel Felix, 33, of Windsor, Colo., was boating with family and friends near the Victoria Day Use Area when he decided to go swimming, Cherokee County sheriff’s Sgt. Jay Baker said.

“Mr. Felix apparently became fatigued and went under the water and never resurfaced,” Baker said.

Felix’s wife and two children, a 5-year-old boy and an 11-year-old girl, were on the boat when he went under about 4:30 p.m. Saturday, according to Tim Cavender, spokesman for Cherokee County Fire and Emergency Services.

Dive and rescue teams from Cherokee and Forysth counties, as well as from the Georgia Department of Natural Resources, continued searching for Felix on Monday.

The drowning was the fifth at Lake Allatoona this year. The four previous drownings occurred in Bartow County sections of the lake, Cavender said.