Two are dead, including the bomber:
A suspected suicide bomber detonated an explosive Friday in front of the U.S. Embassy in Ankara, killing himself and a guard at the entrance gate, officials said.
U.S. Ambassador Francis Ricciardione told reporters that a Turkish citizen was also wounded in the 1:15 p.m. blast in the Turkish capital.
There was no immediate claim of responsibility, but both Kurdish rebels and Islamic militants are active in Turkey.
The bomb appeared to have exploded inside the security checkpoint at the side entrance to the embassy, but did not damage the inside of the embassy itself.