Police on Thursday arrested the third highest ranking member of Egypt's outlawed Muslim Brotherhood, security officials and the group said. The arrest came a few days after student members of the group staged a militia-style demonstration at Azhar University outside of Cairo. Mohammad Khayrat Shater, 55, was taken from his home early Thursday, security officials said, speaking on condition of anonymity because they were not allowed to speak to the press. The Brotherhood said police also arrested more than 180 students and 13 others including Shater's son-in-law.