Two bombs exploded at the departure hall of the Brussels airport on March 22, killing 16 people, following which it was shut for repairs.
Jacqueline Galant was accused of ignoring an official report that leaked Thursday detailing security flaws at Belgium’s airports.
It was not clear when and where the two men, reportedly brothers, were detained by Belgian officials.
The attackers reportedly had first planned to hit the soccer tournament scheduled to take place in France this summer but shifted after they felt the police closing in.
The perpetrators decided to attack Brussels as they were “surprised by the speed of the progress in the ongoing investigation,” Belgian officials said.
Interpol says information needs to move “faster than the terrorists” to protect citizens from attacks.
Authorities say Mohamed Abrini, photographed at a Brussels airport just before the March 22 attacks, is one of four suspects facing charges.
Operations late Friday may be in response to fears of reprisal attacks after a key Paris-Brussels suspect and others were arrested earlier, a report said.
Authorities have urged the public to help locate the key living suspect, who has been named as “the man with the hat.”
Belgian Prime Minister Charles Michel said Wednesday that the attacks represented a security “failure” but the country was not “a failed state.”
Following last month's airport bombings, the U.S. carrier said it has suspended its Atlanta-Brussels route, but plans to resume flights from New York.
The airport, rocked by twin terrorist bombings March 22, will accommodate a limited number of flights, officials said.
Following the attacks in Paris and Brussels, Britain plans to add as many as 900 security officers.
U.S. Attorney General Loretta Lynch is set to meet this week with Belgium's interior minister to discuss anti-terror plans.
America has sent FBI teams to help Belgian authorities investigate the March 22 attacks that killed 32 people.
In a letter to authorities, officers pointed out weak spots in the airport's security system, after terror attacks killed 32 people and wounded many more.
Authorities discovered a computer containing search data on Belgian Prime Minister Charles Michel’s office and home.
A temporary structure has been put up to bypass the departure area that was heavily damaged when two bombs exploded there last Tuesday.
Belgian police released a video of a mysterious man seen in the company of the Brussels Airport attack bombers, indicating that he is still at large.
Officials said Sunday that a near-term reopening is not possible due to the ruined infrastructure resulting from two suicide bombs last week.