A radical Turkish Marxist group has claimed responsibility for the suicide bomb attack at the US embassy in Ankara, according to a statement posted on the Internet on Saturday.
The Revolutionary People's Liberation Front (DHKP-C), which the Turkish authorities had already blamed for Friday's bombing, accused the United States of being "the murderers of the world," according to a statement on the Halkin Sesi (The Voice of the People) website.
The site carried two pictures of the bomber identified as Alisan Sanli, one of which shows him brandishing a gun.
Th authorities have said the bomber was previously jailed for his involvement in attack on a military compound in Istanbul in 1997.
A Turkish guard at the embassy in an upmarket area of Ankara was killed in the attack and three other people were wounded.
The outlawed group, blacklisted by the United States and the European Union as a terrorist group, has waged a string of attacks over the past few decades that have left dozens of people dead, including prominent political and military figures.