Bombs Target Turkish Police

People carry the flag-draped coffins of police officers killed in Saturday's blasts in Istanbul, Turkey, Dec. 11, 2016.

A man looks on from a broken window in front of the scene after a blast in Istanbul, Dec. 11, 2016.

Family members attend a memorial for police officers killed outside the Besiktas football club stadium Vodafone Arena, in Istanbul, Dec. 11, 2016.

Turkish Prime Minister Binali Yildirim, President Tayyip Erdogan and former President Abdullah Gul pray during a ceremony for police officers killed in Saturday's blasts in Istanbul, Dec. 11, 2016.

Turkish police officers carry a coffin of a fellow officer during a ceremony for police officers killed in Saturday's blasts in Istanbul, Dec. 11, 2016.

People walk past the Besiktas football club stadium Vodafone Arena in Istanbul, Dec. 11, 2016, following the late Saturday explosion.

Forensic officials work at the scene of explosions near the Besiktas football club stadium after attacks in Istanbul, Dec. 10, 2016.

Police arrive at the site of an explosion in central Istanbul, Dec. 10, 2016.

Police officers comfort each other after explosions near the Besiktas football club stadium Vodafone Arena in Istanbul, Dec. 10, 2016.

Turkish policemen are at the site of an explosion in central Istanbul, Dec. 10, 2016.

Police officers and ambulances fill the street next to the Besiktas football club stadium, Dec. 10, 2016.

Police arrive at the site of an explosion in central Istanbul, Dec. 10, 2016.

Two loud explosions have been heard near the newly built Besiktas football stadium in Istanbul and witnesses at the scene said gunfire could be heard in what appeared to have been an armed attack on police, Dec. 10, 2016.