The officer, 33, was shot Tuesday night while responding to reports of a man with a gun in the area, Police Commissioner William J. Bratton said. He was the fourth officer killed in New York City in 11 months, Bratton said. Holder, who is married, joined the department in 2010.

Official fear the death toll from the attack at the Al Bilaili in Sanaa will rise because dozens of worshipers suffered severe injuries. No one immediately claimed responsibility for the attack. The attack is the sixth in three months in which a mosque has been targeted.