Islamist militia resumed their assault on Libya's main international airport in Tripoli on Sunday two days after an abortive truce with the rival former rebels that control it, a security official said, Alarabiya reported.
"The airport was attacked this morning with mortar rounds, rockets and tank fire," Al-Jilani al-Dahesh, an airport security official said.
"It was the most intense bombardment so far," he added.
Islamist militia first attacked the airport last Sunday, forcing a halt to all flights.
Their continued offensive has caused extensive damage to planes and airport infrastructure that aviation officials say will keep it closed for months.