In this image made from video, emergency personnel are seen in front of a side entrance to the US Embassy following a blast, Ankara, Turkey on February 1, 2013.

Ankara - An explosion at a side entrance to the US embassy in the Turkish capital Ankara killed at least one person on Friday in what some Turkish media said may have been an attack by a suicide bomber.

A Reuters witness saw one wounded person being lifted into an ambulance as police cordoned off the area following the explosion, which sent smoke and debris flying into the street.

Television footage showed a door blown out and masonry from the wall around it scattered in front of the entrance, although there did not appear to be any more significant structural damage. - Reuters