Gunmen attack Pakistan police training center

Pakistani police officers carry an injured colleague to an armored car inside the compound of the police training school in Lahore, Pakistan. Gunmen armed with rifles and hand grenades attacked the school today, killing at least 11 officers and wounding dozens. The attack was another sign of intensifying turmoil in Pakistan, considered a crucial U.S. ally in the fight against terrorism.  (K.M. Chaudary / Associated Press)

Troops of Pakistan’s paramilitary force rush to a police training school in Lahore. Pakistani soldiers and other security forces surrounded the police academy where heavily armed gunmen were holed up after storming the compound.  (K.M. Chaudary / Associated Press)

Pakistani paramilitary soldiers arrest a man suspected of trying to detonate a hand grenade near a military helicopter that was being used for suvelliance at a police training center under siege in Lahore.  (Rahat Dar / EPA)

A Pakistani police officer tries to deter photographers at the site of a gun battle at a police training school on the outskirts of Lahore.  (Emilio Morenatti / Associated Press)

Pakistani rescue workers shift an injured policeman to an ambulance outside a police training center that had come under a daylong seige by gunmen in Lahore. The attack on the compound is the second one within a month in Lahore, a cosmopolitan city once considered a relatively quiet corner of the country. On March 3, six police guards and a bus driver were killed when gunmen attacked the visiting Sri Lankan cricket team.  (Rahat Dar / EPA)

Pakistan Army soldiers stand guard during a siege at the Manawan police training school in Lahore.  (Nadeem Ijaz/Getty Images)

A wounded police officer is carried away during a siege by terrorists at the Manawan police training school in Lahore, Pakistan. Some police trainees described leaping from windows and scaling the compound’s high walls to escape the gunfire.  (Nadeem Ijaz/Getty Images)

People gather on a road during the daylong siege at the Manawan police training school in Lahore, Pakistan.  (Nadeem Ijaz/Getty Images)