Israeli occupation forces carried out today airdrops of its troops from helicopters south of Jenin, and installed a military checkpoint, Palestinian Sources said. The sources pointed out that Israeli occupation forces carried out troops-airdrop from a helicopter between the villages of Marka and Sahl Aqaba in the plains and mountain areas under the pretext of conducting military exercises. The sources added that Israeli forces established a military checkpoint between the villages where the soldiers stop and search vehicles and citizens" identities.