At least three people were killed in fighting between rival religious sects in Lebanon’s second city on Wednesday, medical and security sources said, as violence from Syria spills over into the small Mediterranean country.

The dead in the coastal city of Tripoli included an 11-year-old boy, as well as two men, the sources said.

The long-running rivalry between Tripoli’s Sunni Muslims and members of the Alawite sect, an offshoot of Shi’ite Islam, has been worsened by Syria’s three-year-old conflict. […]