(Adds details, background)
BENGHAZI, Libya, March 2 (Reuters) - Gunmen killed a French citizen in Libya's eastern city of Benghazi on Sunday, a security official said, the latest slaying of a foreigner in the restive area.
The man worked for a company upgrading a large hospital in Benghazi, which has been rocked by car bombs and assassinations amid Islamist militant activity, the official said.
"He was killed with three shots," the official said.
The killing comes a week after police found seven Egyptian Christians shot dead execution-style on a beach outside Benghazi, home to several oil firms.
None has claimed responsibility for the killing of the Egyptians but residents said gunmen had looked for Christians in their neighborhood, suggesting radical Islamists might be behind it.
Most countries have closed their consulates in Benghazi and some foreign airlines have stopped flying there since the U.S. ambassador and three other Americans were killed in an Islamist militant onslaught in September 2012.
An American schoolteacher was also killed by gunmen in December while he exercised in the city.
Three years after the revolution that ousted Muammar Gaddafi, Libya's weak government and army are struggling to control brigades of former rebels and Islamist militias in a country awash with weapons.
Western diplomats worry that the violence in Benghazi will spill over to the capital, Tripoli.
In January, a British man and a New Zealand woman were shot execution-style on a beach 100 km (60 miles) west of Tripoli. (Reporting by Ayman al-Warfalli and Feras Bosalum; Writing by Ulf Laessing; Editing by Dale Hudson)
Our Standards: The Thomson Reuters Trust Principles.