(CNN) Photos and plans for a number of Belgian government buildings were found on a computer abandoned in a garbage can outside a terror cell's bomb factory in Brussels, a source close to the investigation told CNN on Wednesday.

The information, reported by multiple Belgian media outlets Tuesday, suggested the buildings were potential additional targets of the cell.

Authorities raided an apartment in the Schaerbeek district of Brussels last week and uncovered 15 kilograms of the explosive TATP, chemicals, a suitcase with nails and screws, other equipment meant to make explosives, and an ISIS flag, Belgian federal prosecutor Frederic Van Leeuw said.

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Belgian authorities are searching for the people responsible for the March 22 bombings . The blasts killed 32 people and injured more than 300, with 87 still hospitalized, Belgian Minister of Health Maggie de Block said.

Two suicide bombers, including Ibrahim El Bakraoui, struck the departure lounge of Brussels Airport in Zaventem about 37 seconds apart, killing at least 10 people. About an hour after the airport explosions, Khalid El Bakraoui, a Brussels-born 27-year-old and Ibrahim's brother, detonated a suicide bomb on the Brussels subway at the end of rush hour.

More than a week later, life hasn't totally returned to normal in Brussels.

The airport was still closed to all air traffic on Wednesday and will be until at least Thursday afternoon, the airport said on its verified Twitter account.

'Be on the lookout'

In the days before the Brussels attack, Belgian authorities sent a wanted notice to law enforcement, including the New York Police Department, for the Bakraoui brothers in hopes of locating the pair, according to two U.S. officials.

The notice came as police in Brussels were concerned a terror attack was being planned, one of the officials said.

The two officials described the wanted notice as similar to a "BOLO" or "Be on the lookout" alert.

As CNN has previously reported, both Ibrahim and Khalid El Bakraoui were included on a U.S. counterterrorism watch list prior to the Brussels attacks.

Ibrahim was on the list before the Paris attacks last November for his suspected ties to terrorism. Khalid was added after the Paris attacks because of his alleged involvement in helping pay for a safe house for some attackers.

France indicts man on terror charges

In Paris on Wednesday, prosecutor Francois Molins said Reda Kriket, a 32-year-old French citizen arrested last week by French police for allegedly plotting an attack on the country, has been indicted after six days in custody.

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Kriket was presented to a counterterrorism magistrate and indicted on charges of criminal conspiracy in order to commit a terrorism act, possession of false documents, weapons possession and manufacturing of explosives.

Molins said police found a large weapons cache and bomb-making materials when they searched Kriket's apartment.

Kriket was previously found guilty in absentia by a Belgian court and sentenced to 10 years in prison for being part of a jihadist network.

French President Francois Hollande announced Wednesday he'll no longer pursue legislation that would have stripped convicted terrorists of their French passports. The law would have applied to French nationals holding dual citizenship.

Benoit Gomis, an international security consultant, told CNN that Hollande gave up after realizing the French Parliament would not approve the idea.

Hollande needed both houses of Parliament to approve exactly the same wording, and that was not going to happen, Gomis said. Last week, the upper house passed a measure with different wording on the issue of confiscating the passports of terrorists.

The proposal had split Hollande's Socialist Party, with Justice Minister Christiane Taubira resigning in January over the passport issue. It went against much of what the Socialist Party had stood for over the past few years.

Hollande himself signed a petition against a similar proposal made when Nicolas Sarkozy was president.