CAIRO - Senior Hamas official Mahmud Zahar slammed a Palestinian unity deal as a "mistake" that has thrown the movement into crisis, in an interview with Egypt's official MENA agency published on Sunday. Hamas leader Khaled Meshaal signed an agreement with Palestinian president Mahmud Abbas earlier this month placing Abbas at the head of an interim government charged with organising elections later this year. The decision to have Abbas head the government "is a mistake," Zahar told MENA. "No one inside the Hamas movement was consulted."