Kawasme, of Hebron, was apprehended while attempting to flee with the help of his family to Jordan under a false identity, Ynet reported.
He reportedly admitted to serving as the leader of the cell that perpetrated the murders of Gilad Shaar, Naftali Fraenkel and Eyal Yifrach. Kawasme said that funding for the attack, which he used to buy weapons, came from Hamas in Gaza.
In his interrogation, Kawasme said he helped to bury the bodies on a plot of land he had purchased two months prior to the murders. He then helped the two men who drove the car and shot the teens to hide.
Security forces are still searching for the two men — Kawasme’s brother, Marwan, and Omar Abu Aysha. Marwan Kawasme, who is active in Hamas, was freed in the Gilad Shalit prisoner exchange and deported to Gaza, The Times of Israel reported.
Another suspected cell member, Hussan Dofesh, also was arrested a month ago in Hebron.