RAMALLAH, July 21 (KUNA) -- The Israeli Army arrested, Sunday, around twenty Palestinians in Nablus City and its refugee camps. Security sources in the city said Hamas movement MP Mona Mansour was arrested after her house was besieged in Balatah Camp, east Nablus. A number of businessmen, owners of currency exchange shops, and workers at commercial establishments were also arrested, along with 8 university students who were arrested after their dorms at Al Najah University were raided. This is the second week of Israeli military operations in Nablus, and the forces closed a number of commercial shops and charitable organizations claiming they are associated with Hamas. Meanwhile, the Israeli Army announced that it disregarded an earlier decision to close a mall at the city, allowing the shop owners to go back to work