Israeli forces carry out detention raids across the West Bank on a near-nightly basis - including in areas, like Nablus city, that are in Area A, which technically falls under full Palestinian Authority political and security control.
The army said the incident will be reviewed.
The U.S. said Monday there has been no change to its West Bank policy after Washington's envoy to Israel stirred controversy with comments suggesting Israel has a right to annex parts of the occupied territory.
Friedman's comments elicited outrage from Palestinian officials who said they are considering filing a complaint against Friedman at the International Criminal Court (ICC). "International law prohibits the annexation of a land by force, as well as a reality imposed by occupying powers". The PLO and other Palestinian organizations called for a "popular uprising" on June 25 and 26 when the U.S.is expected to launch its peace plan.
Israeli Prime Minister Benjamin Netanyahu pledged ahead of April elections to begin annexing West Bank settlements.
Israel seized the West Bank in the 1967 Middle East war and has controlled it ever since, despite worldwide criticism.
More than 600,000 Jewish settlers now live in the West Bank and annexed east Jerusalem among some three million Palestinians.
The Trump administration recognized Jerusalem as Israel's capital in 2017 and Palestinians have seen cuts in USA funding that have contributed to their economic distress in the West Bank and the Gaza Strip.
On the long-delayed peace plan, Friedman said it was aimed at improving the quality of life for Palestinians but would fall well short of a "permanent resolution to the conflict".
Palestinian Government Spokesman, Ibrahim Melhem said that the assault on the Palestinian Preventive Security headquarters in the city of Nablus represents an escalation of hostilities created to undermine the most significant pillars of the foundation of a Palestinian state, and jeopardize internal security.
Those moves include recognizing the disputed city of Jerusalem as Israel's capital and cutting hundreds of thousands of dollars in aid to the Palestinians.