The bomber, who blew up a bus in the Black Sea resort of Burgas, has not been identified yet.
Forensic experts created the image of a dark-haired man with pale skin. The bomber’s head was found at the scene.
Police suspect that he entered Bulgaria in June and had accomplices.
But Bulgaria has declined to back Israeli claims that Iran and the Lebanese militant group Hezbollah played a role.
As well as those killed, dozens of people were wounded in the blast.
Shortly after the bombing, Bulgarian authorities released CCTV images of the suspected bomber, but they appeared to contrast with some witness descriptions.
So far no match has been found in international databases for the fingerprints and DNA samples taken after the bombing.
The US House Ethics Committee has voted to release its report on former Republican Representative…
ABC News has agreed to pay $15 million to President-elect Donald Trump to settle a…
South Korea’s parliament has voted to impeach President Yoon Suk Yeol over his failed attempt…
Israeli war planes have carried out more than 100 air strikes in Syria on December…
President-elect Donald Trump has threatened to impose 100% tariffs on the BRICS countries if they…
Syrian troops have withdrawn from the city of Aleppo following an offensive by rebels opposed…