( CNN ) -- A radical leftist terror group has claimed responsibility for Friday 's suicide bombing at the U.S. Embassy in Ankara , Turkey , which killed a Turkish guard and wounded a television journalist . In a statement on its website , the Revolutionary People 's Liberation Party , or DHKP-C , said `` E. Alisan Sanli has become a martyr after accomplishing the action on the American Embassy in Ankara . '' The governor 's office on Saturday confirmed his identity through forensic testing . Authorities have since detained three people for questioning over the attack and continue to investigate , according to the semi-official Anadolu new agency . `` We are going to build the future with sacrifices , '' said the militant group , which denounced U.S. foreign policy and criticized Turkey for its Western ties in a lengthy and at times rambling statement . Sanli received bomb-making training somewhere in Europe in the mid-1990s , according to Hasan Selim Ozertem , a security expert at the International Strategic Research Organization in Ankara . Turkish officials say that as a result of counterterrorism operations on Turkish soil , DHKP-C -- often described as having a Marxist-Leninist philosophy -- became increasingly active among the Turkish diaspora in Europe . Sanli returned to Turkey in 1997 and was subsequently involved in attacks on the Istanbul police headquarters and senior military officials using anti-tank weapons . After being arrested , Sanli went on a lengthy hunger strike and was released from jail in 2002 because of a neurological disorder . The blast killed spurred security clampdowns at diplomatic facilities in Turkey , plus messages of condolences and solidarity . Turkish Prime Minster Recep Tayyip Erdogan called it a strike `` against the peace and welfare of our country . '' The violence reverberated well beyond Turkey 's borders , especially in the nation whose embassy was targeted . The spotlight on U.S. diplomatic installations was already intense after violence last September in Egypt , Tunisia and Libya , where Ambassador Christopher Stevens was one of four Americans killed in Benghazi . A Cold War dynamic in Turkish attack . CNN 's Ivan Watson , Tim Lister and Talia Kayali contributed to this report .
Officials confirm attacker 's identity through forensic testing . The suspect is a white male in his 20s with short hair and wearing a black baseball cap, according to the FBI. Authorities have detained three people for questioning over the attack , semi-official media reports .