The body of a man who had been shot in the head was found in Tripoli, on Tuesday, according to a witness.
The streets of the capital Tripoli were largely empty and stores closed, including along the main Omar Mukhtar road, the witness said in a telephone interview with the German Press Agency dpa.
Loyalists of Libyan leader Moamer Gaddafi were driving around the capital, honking car horns and carrying posters of the Libyan leader.