Libyan officials say an American teacher has been shot to death while jogging in Libya's eastern city of Benghazi. 
 
 Fadyah al-Burghathi, spokeswoman for the Al-Galaa hospital, says the body of a man from Texas was brought to the hospital on Thursday with gunshot wounds. 
 
 A security official says the American taught chemistry at the city's International School, a Libyan-owned institute that follows an American curriculum. No one has claimed responsibility for the teacher's killing. 
 
 But the security official, Ibrahim al-Sharaa, says the American was jogging near the U.S. Consulate, where the American ambassador and three other Americans were killed by Islamic militants last September. ||||| TRIPOLI Gunmen shot dead an American chemistry teacher working at an international school in the Libyan city of Benghazi, medical and security sources said on Thursday. 
 
 "He was doing his morning exercise when gunmen just shot him. I don't know why. He was so sweet with everyone," said Adel al Mansouri, director at the school in Benghazi. 
 
 It was not immediately clear who was responsible for the killing. 
 
 Libyan special forces have been battling militants from Ansar al-Sharia in Benghazi. U.S. officials blame the group for attacking the U.S. consulate in the eastern city in September 2012, killing the ambassador and three other Americans. 
 
 Security sources said three soldiers were also killed in separate attacks on Thursday in Benghazi. 
 
 Two years after a NATO-backed uprising ousted veteran leader Muammar Gaddafi, Libya's armed forces are struggling to contain militias, former fighters and Islamist militants who control parts of the vast oil-producing country. 
 
 (Reporting by Ayman al-Warfalli in Benghazi; Feras Bosalum in Tripoli; writing by Patrick Markey; Editing by Mark Trevelyan)
– An American teacher has been killed in Libya, medical and security sources tell Reuters. The US citizen, a man from Texas, was working as a chemistry teacher at an international school in Benghazi, and the AP reports he was shot while jogging near the US consulate. No one has yet claimed responsibility. The former principal of the school and current head of the International School of Benghazi's board of governors confirms the report to NBC News.