Security forces arrested four Palestinians from the West Bank town of Beit Fajjar overnight Saturday on terror offenses, police said in a statement.
Two of the suspects were minors, who were detained for manufacturing improvised weapons. Police uncovered two weapons during raids on the town.
The statement did not specify the age of the two suspects.
Two other Palestinians from the town, located 19 kilometers (11 miles) south of Jerusalem, were arrested for throwing Molotov cocktails from a passing car at the Jewish settlement of Migdal Oz in the adjacent Gush Etzion bloc.
All four suspects were taken for questioning.
Police said that an ongoing crackdown on illegal and improvised weapons in the area has so far uncovered dozens of weapons.
Earlier this month IDF soldiers and police arrested two minors in Beit Fajjar suspected of having recently launching multiple rock and firebomb attacks at Migdal Oz.
During their interrogation the pair confessed to belonging to an illegal weapons-making cell in their village, police said at the time.
Security forces returned to Beit Fajjar the following night and arrested two more minors in connection with the operation.
Ammunition and various gun parts were seized during the arrest raid.
Also Sunday police said security forces recently arrested two Palestinian residents of East Jerusalem on suspicion of passing intelligence to Palestinian Authority security agents.
The two men, residents of the neighborhoods of a-Ram and Kafr Aqab, are accused of passing intelligence gathered from telecommunications databases they had access to through work, according to an Israel Police spokesperson.
Police did not say what information was transferred.