The detentions were made after Israeli forces ransacked several homes of Hamas leaders, Ma'an news agency reported.
It was not known where the detainees were taken.
In a separate incident in Hebron, Israeli soldiers stormed a house and forced 15 members of a family to relocate to the first floor of the home. The soldiers then set up a base on the third floor of the home.
Later in the day, Israeli detention officials announced the release of Hamas lawmaker Nayef Al-Rujub.
Al-Rujub, from Hebron had been held in administrative detention for two and a half years after being arrested in December 2010.
He has spent a total of about 10 years in Israeli detention facilities.
Some 14 Palestinian lawmakers are still being held in Israeli prisons, the detainee center said in a statement.