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BRUSSELS — As police hunted for the surviving Brussels bomber DJ Moore Camo Jersey , evidence mounted Wednesday that the same Islamic State cell carried out the attacks in both Paris and Brussels, and that the militants may have launched this week's slaughter in haste because they feared authorities were closing in on them.


On a day of mourning across Belgium following Tuesday's bombings of the Brussels airport and subway that killed 31 people and wounded more than 270, new information emerged about the four attackers:


— European security officials said one of the suicide bombers was Najim Laachraoui, a Moroccan-born Belgian whom police have hunted as the suspected bombmaker in the Nov. 13 attacks on Paris by the Islamic State that killed 130 people.


— The other two suicide bombers were Belgian-born brothers Greg Olsen Camo Jersey , Ibrahim El Bakraoui, and his younger brother, Khalid, both known to the police as common criminals Kawann Short Camo Jersey , not anti-Western radicals.


— Turkish President Recep Tayyip Erdogan said Ibrahim El Bakraoui was caught in June 2015 near Turkey's border with Syria and deported, at his own request, to the Netherlands, with Ankara warning Dutch and Belgian officials that he was a "foreign terrorist fighter." But other Turkish officials said he was released from Dutch custody due to lack of evidence of involvement in extremism.


Details of the investigation from chief prosecutor Frederic Van Leeuw pointed to a rising sense of panic among the three bombers who blew themselves up. An unidentified fourth man who was shown in airport video surveillance footage remains at large after Van Leeuw said his suitcase bomb failed to detonate properly. Authorities say he was the man in a light jacket and hat on the far right of the video footage.


Van Leeuw said the bomb did partially explode after police had already evacuated the terminal Trai Turner Camo Jersey , injuring nobody.


The prosecutor said a laptop seized from a garbage can on a street outside the brothers' last known address contained a message purportedly from Ibrahim El Bakraoui that indicated he was expecting to be arrested imminently following Friday's capture in Brussels of the suspected ringleader of the Paris attacks, Salah Abdeslam.


"I don't know what to do, I'm in a hurry, people are looking for me everywhere Ryan Kalil Camo Jersey ," Van Leeuw quoted the message as saying. "If I give myself up I'll end up in a cell next to him," — an apparent reference to the just-arrested Abdeslam.


Police were drawn to the brothers' apartment Tuesday night thanks to a tip from a taxi driver who had unwittingly delivered them to the airport, Van Leeuw said. Inside the northeast Brussels residence they found an apparent bomb-making factory, including 15 kilograms (33 pounds) of homemade explosives and nails for use as shrapnel.


Neighbors told The Associated Press they had no idea of the brothers' activities and barely saw them until the taxi collected them and their visibly heavy bags Tuesday morning.


One neighbor Luke Kuechly Camo Jersey , who was willing to give only his first name of Erdine, said he was about to drive his son to school when he saw the two men carrying their bags out of the building.


"The taxi driver tried to get the luggage. And the other guy reached for it like he was saying: No, I'll take it," the neighbor said.


At the core of the Belgian investigation is a photo taken from the airport's surveillance cameras showing three attackers walking side by side as they push luggage carts. Van Leeuw said the middle figure has been identified as Ibrahim El Bakraoui Cam Newton Camo Jersey , while the two men flanking him remained unidentified.


But two security officials told the AP that Laachraoui's DNA was verified as that of one of Tuesday's suicide bombers after samples were taken from remains found at the airport. One European official and one French police official spoke on condition of anonymity because they weren't authorized to divulge details of the Belgian investigation. Both officials were briefed on the investigation.


Belgian officials have not publicly linked any of the remains to Laachraoui; nor have they said he was involved in the Brussels attack.


Since prosecutors said Khalid El Bakraoui was killed in the subway bombing, that would make Laachraoui the remaining unidentified figure on the far left of the airport video footage.


Belgian authorities have been looking for Laachraoui since last week, suspecting him of being an accomplice to Abdeslam, who was arrested Friday in the Brussels neighborhood where he grew up.


Laachraoui is believed to have made the suicide vests used in Paris Christian McCaffrey Camo Jersey , a French police official told the AP,