Ahmad Nasrallah, a central weapons supplier for terrorists in the West Bank, was apprehended near Tulkarm, the IDF announced on Sunday.
The suspect, identified by security officials as a key weapons dealer for the Tulkarm-area terrorist network, was transferred to the Shin Bet for interrogation.
Dozens of crime families detained in West Bank undercover op.
Israel Police arrested dozens of people from the Abu Latif and Hariri crime families in an operation with the Border Police, police said in a statement on Sunday.
The operation followed an investigation which aimed to combat both extortions and "protection money" paid to these crime families in northern Israel, police explained.
Police targeted dozens of members from these families, including their homes, as well as locations in the West Bank.
The police statement explained that the operation was planned for more than a year, using undercover agents, under the leadership of the Northern District Command and the State Attorney's Office economic department.