Surveillance footage, cab driver offer clues in investigation in Brussels attack

Updated 8:49 AM EDT, Wed March 23, 2016
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Story highlights

Authorities comb through a building where a taxi driver says he picked up the suspects

Prosecutor: Of three men pushing airport luggage carts in photos, two are probable suicide attackers and one is at large

Two explosions rock Brussels Airport, another rips through a subway station in the Belgian capital

(CNN) —  

In grainy images from surveillance footage, a man wearing light-colored clothes and a hat pushes a baggage cart through the airport.

It’s one key piece of evidence authorities are looking at as they search for suspects after two explosions at the Brussels airport and another at a busy subway station in the Belgian capital Tuesday killed at least 30 people and wounded 230 others.

Brussels attack investigation: 1 person arrested

ISIS claimed responsibility for the coordinated attacks, but authorities said it’s too soon to say for sure whether the terror group was behind the blasts.

So far, police have released photos of three men they say are suspects tied to the airport attack, standing side-by-side.

Police say they are looking for the man on the right in connection with the Brussels attack.
Begium Police/Belgian Police
Police say they are looking for the man on the right in connection with the Brussels attack.

Two of the men, wearing black in surveillance images, are believed to be suicide bombers who died in the explosions in the airport’s departure lounge.

But investigators believe the one in light-colored clothing planted a bomb at the airport, then left. Authorities called him a wanted man and asked for the public’s help tracking him down.

“The third man left a bomb in the airport, but it didn’t explode. … And we are now looking for this guy,” Belgium’s Interior Minister Jan Jambon said.

A photograph released by investigators shows the three suspects side-by-side.

Federal Prosecutor Frederic Van Leeuw said the two men wearing black in the photograph were likely the suicide attackers.

Video shows the men exiting a taxi and moving through the airport, according to two U.S. officials. The man dressed in white left the airport after accompanying the other two, they said – a move the officials said appeared to be planned.

Live blog on the Brussels attacks

Taxi driver tip sparks raid

A break in the investigation may have come from a taxi driver who took the suspects to the airport.

The driver contacted authorities after seeing surveillance footage and gave them the address where he picked the men up, according to two U.S. officials briefed on the investigation.

That information prompted authorities to raid a residence after the attacks, the officials said.

Investigators found a nail bomb, chemical products and an ISIS flag during a house search in the northeast Brussels neighborhood of Schaerbeek, Belgium’s federal prosecutor said in a statement.

Hours later, they were still combing through the building for evidence.

Security was high. At one point, a helicopter hovered overhead, carrying a sniper with a weapon trained on the building.

As masked, armed officers stood guard outside the building, the burst of camera flashes inside could be seen from the street below. Officers left the building carrying bags of evidence they loaded onto vehicles.

Ties to Paris attacks?

A Belgian government representative told CNN that 10 people were killed and 100 wounded at Brussels’ international airport. At least 20 people died and 130 were wounded at the Maelbeek metro station, officials said.

Adelma Marina Tapia Ruiz was moments from boarding a plane to New York, where she and her family were looking forward to reuniting for Easter.

Authorities in Belgium have been trying to crack down on terror threats for months as they raided homes in the area in search of suspects. Tuesday’s violence came just days after investigators closed in on Europe’s most wanted man, Paris attacks suspect Salah Abdeslam, who was hiding out in a Brussels suburb.

The “working assumption” is that the attackers came from the network behind November’s massacres in Paris, which left 130 dead, Belgian security sources said, while cautioning it is very early in the latest investigation. ISIS also claimed responsibility for those attacks.

As doctors treat the wounded and authorities search for suspects, a key question remains unanswered: Could the attacks have anything to do with Abdeslam’s arrest?

On Tuesday, Belgian Prime Minister Charles Michel deflected a question about whether there is any link between the attacks and the Belgium-born French citizen’s capture, saying it is too early to tell.

Michel said Tuesday he had “no information” about who was responsible for the attack, adding that authorities will find that out, but now their focus is on caring for the victims.

Two senior U.S. officials told CNN they believe the Belgium attack is tied to the same network as Abdeslam.

Fears realized

One of the two airport explosions happened outside security checkpoints for ticketed passengers and near the airline check-in counters, an airline official briefed on the situation said.

The subway station blast happened about an hour later in the Brussels district of Maelbeek, near the European Quarter, where European Union institutions are based.

“We were fearing terrorist attacks