From Ivan Watson, CNN
updated 3:43 PM EST, Fri February 1, 2013

(CNN) -- Turkish officials say a suicide bomber belonging to a radical leftist organization blew himself up just outside the U.S. Embassy in Ankara on Friday.

The blast killed a Turkish security guard and wounded a journalist. A senior U.S. official said no Americans were wounded.

Istanbul police identified the bomber as Ecevit Shanli, a member of DHKP-C, a Marxist Leninist terror group.

Little information is being released about the bomber or the group, but the specter of this kind of attack has once again put a spotlight on security at U.S. posts around the globe.