Brussels Suicide Bombers ID'd as Surviving Suspect Continues to Elude Police

Belgian officials say they believe released surveillance footage shows three suspects in Tuesdays attacks.

Two Brussels suicide bombers were identified Wednesday as police in Belgium continued their search for a third suspect pictured in surveillance footage.

Ibrahim El Bakraoui and another bomber blew themselves up Tuesday morning at the Brussels airport, taking eleven lives with them. His brother, Khalid El Bakraoui, detonated a bomb that killed 20 on the city's subway an hour later.

Pictured in surveillance footage with Ibrahim and a third bomber in the moments before the airport bombing was Najim Laachraoui, police say. Laachraoui is reportedly still on the run.

Read: Mom of Twins Who Was Flying to New York is First Confirmed Victim of Brussels Attacks

According to Belgian authorities, Laachraoui's bomb was the largest of the devices that were taken to the airport. However, the device never detonated.

Laachraoui is believed to be the only suspect remaining on the run following Tuesday's attacks after the El Bakraoui brothers died and the third suspect in aiport footage was arrested.

The photo from Brussels International airport was released by Belgian authorities Tuesday afternoon. In it, the three men are pictured with luggage carts in the airport.

Two suitcases found at the address at which the airp[ort trio was picked up in a taxi were found to contain explosives, nails and screws.

On Tuesday afternoon, Belgian police issued a notice about Laachraoui.

Read: Three American Mormon Missionaries Among Injured in Brussels

"#TERRORISME Who recognizes this man," the police asked in a tweet.

The man pictured is in white and appears to have a goatee or other facial hair. He is wearing a black hat.

At least 30 people are believed to have been killed in the airport blast and the explosion on a Brussels subway platform that followed. 

On an ISIS-affiliated website, the terrorist organization reportedly took responsibility for the attack late Tuesday morning.

ISIS claims its "fighters" carried out the attacks using "explosive belts and devices." It also claimed that the suspects "opened fire" before detonating their bombs.

In a search for the suspect launched in Brussels following Tuesday's attacks, police found a nail-filled bomb, chemical products and an Islamic State flag in  a house in the Schaerbeek neighborhood, Associated Press was told.

Read: Dozens Reported Dead, 170 Injured in Multiple Explosions in Brussels

U.S. officials believe attacks were carried out by terrorists who were a part of the same network that conducted November's Paris attacks, which left 130 dead.

At least one explosion was reported near the American Airlines desk at the main airport terminal in Brussels shortly after 8 a.m. local time (3 a.m. ET). 

Belgian media reported that witnesses heard gunshots and shouting in Arabic before the blasts.

The tragedy comes just four days after authorities said a suspect in the Paris terror attacks, Salah Abdeslam, was taken into custody in Belgium after months on the run.

Watch: Footage Shows the Moment Deadly Bomb Detonated at Brussels Airport