Israeli authorities say they have carried out interrogations in two unauthorized settlement outposts in the West Bank.

The move appears to be part of a crackdown on Jewish extremists following a recent arson attack on a Palestinian home.

Israeli media said Sunday that the interrogations are connected to the July 31 arson attack that killed a Palestinian father and his 18-month-old son and severely injured two other family members. Israeli police and the Shin Bet security agency would not elaborate on the interrogations.

The Shin Bet and the police said one outpost raided was Adei Ad. In January, Jewish settlers near the outpost threw stones at U.S. consular vehicles carrying American officials who were visiting the area.

The outposts are isolated Israeli settlements built without government authorization.