Najeh Bkeirat, the head of the manuscripts and heritage department at Al-Aqsa, was detained in Sur Bahir, they told Ma’an.
Official PA news agency Wafa reported that Bkeirat was charged with disobeying a gag order which banned him from talking to the press about the situation in Jerusalem.
Israeli police spokesman Mickey Rosenfeld said he was looking into the report.
Meanwhile, the Israeli army said it detained seven Palestinians across the West Bank overnight Sunday.
Three people were arrested in Salfit, two in Qalqiliya, and one in both Nablus and Hebron, an Israeli army spokeswoman said.
Rocks and firebombs were thrown at soldiers in Nablus, the spokeswoman added.
Palestinian police said that Saba Nidal Shahada, 20, and Yousef Abdul Jabbar, 20, were detained by Israeli forces in Qalqiliya.
Muhamad Osama Swelem, 22, was named as one of the men arrested in Salfit, a police statement said.