Two gunmen have opened fire at the US Consulate building in Istanbul, sparking a gunfight with police, Turkish media reports said.
No one was hurt in the attack and the gunmen managed to escape, the private Dogan news agency reported.
The attack came hours after an overnight bomb attack at a police station in Istanbul injured 10 people, including seven police officers, and caused a fire that collapsed part of the three-storey building.
Both attacks come at a time of a sharp spike in violence between Turkey's security forces and rebels of the Kurdistan Workers' Party, or PKK.
Turkey is taking a more active role against Islamic State militants. Last month it conducted aerial strikes against IS positions in Syria and agreed to let the US-led coalition use its bases for its fight against IS. The move followed a suicide bombing blamed on IS which killed 32 people and after IS militants fired at Turkish soldiers from across the border in Syria, killing one soldier.
Yesterday, the US military announced that a detachment of six F-16 fighter jets have arrived at Turkey's southern Incirlik Air Base to join the fight against IS militants.