Further airstrikes were made by both pro-GNA and pro-LNA air force aircraft throughout western Libya between 8 April and 13 April, with pro-GNA fighter jets targeting pro-LNA advancing troops near Sirte, Tripoli International Airport, Gharyan and at the outskirts of Tripoli, while pro-LNA fighter jets targeted pro-GNA positions at Misrata, Tripoli International airport and throughout the city of Tripoli. On 10 April, during heavy fighting south of Tripoli, pro-LNA military 166th brigade claimed to have shot down with a ZU-23-2 anti-aircraft gun a pro-GNA L-39ZO Albatros fighter jet, which flew from the Misrata air force base. On 14 April 2019, pro-GNA forces shot down a pro-LNA MiG-21MF in the area of Ain Zara, Tripoli, with a Chinese-made FN-6 MANPADS (pro-LNA forces claim that the aircraft crashed due to technical problems), its pilot Jamal Ben Amer ejected safely and survived, being retrieved by pro-LNA Mi-35 helicopter. On 17 April, pro-LNA forces captured in the Tripoli outskirts from pro-GNA forced several Chinese-made FN-6 MANPADs, confirming the claims that pro-GNA forces have been armed with such advanced anti-aircraft weapons, which were also not previously in use by the Libyan armed forces before the NATO-led intervention in 2011—according to the pro-LNA and Egyptian sources, the Chinese-made FN-6 MANPADs were supplied to pro-GNA forces by Qatar via Sudan.