Turkish media reported that the suicide bomber targeted police officials. The incident was happened around 10:30 am in north side Istanbul's Taksim Square, area cordoned off for police officers and police vehicles.
Istanbul Police Chief Huseyin Capkın told that the attack was carried out by a male suicide bomber who was killed in the blast. Twelve of the injured were civilians and 10 were police officers.
"We think the attacker attempted to enter a police bus and detonate the bomb inside, but the explosives went off earlier," said Huseyin Capkın.