San Diego police are searching for a man suspected of killing two homeless men and stabbing a third in a series of attacks over the weekend.

The Union-Tribune reported the unidentified suspect is linked to a burned body found Sunday under a highway and a body discovered Monday a few miles away.

Authorities said the man was seen running from the area near the fire. Early the next day, police found a homeless man with serious stab wounds at an intersection. He was hospitalized with life-threatening injuries.

A few hours later, officers discovered the second body.

Police released grainy images of the suspect taken from a convenience store camera and sought help identifying him. They described him as 30 to 50 years old, wearing a hat and carrying a backpack.