Tripoli - Sources in Libyan National Army revealed that ISIS extremist group blew up the sea bridge in the Libyan city of Benghazi to prevent the advance of 'the national' Libyan army to liberate the area. Meanwhile, a military official of the internationally-recognized Sarraj's government, led by Faiz Al-Sarraj, said that they managed to control the southern base of Tamanhant. Spokesperson of Libyan army Ahmed Al Mesmari said that the extremist militants bombed the sea port in Benghazi's Sabri district in an attempt to prevent the Libyan troops from advance to liberate the area. The district is considered the last stronghold for ISIS in the Libyan city.