Four people drowned this weekend in Lake Lanier and the Chattahoochee River — an ominous sign on the cusp of summer.

The Cobb County dive team today pulled a Stone Mountain man from the the Chattahoochee River who had drowned in a swimming accident Sunday.

Officials identified the man as 22-year-old Ibrahim Sanusi who drowned in Sandy Point National Recreation Area near Akers Drive.

Sanusi died after he went into the water at a location called “Diving Rock” and did not resurface, said Mark McKinnon, spokesman for the Department of Natural Resources.

The diving team had to postpone the search Sunday because of darkness.

He was the fourth drowning victim reported in the metro area over the weekend. Authorities have identified three people who drowned in Lake Lanier.

Leonel Torres, 50, and Elton Torres, 15, of Lilburn were the father and son who drowned while playing on an island in Lake Lanier in Forsyth County, McKinnon said.

McKinnon identified Beto Silva, 20, of Peoria, IL as the man who drowned when he fell off a sandbar and slipped into deep water while walking to an island near Old Federal Park. Rangers again used sonar to locate the body which was recovered by Hall County divers.