Arturo Herrera, who ran the company that owns the site, said yesterday: “Obviously it’s difficult to be a victim, but the consequences of any crime are a lot heavier than any criminal record.”

An unidentified 19-year-old, who was at the school last Monday with some friends and didn’t respond to a request for comment, has been detained in Belgium, officials said. The name has not been released. Police said they found his passport at his home.

There were no other casualties at the museum, but police said that all of those hurt at the museum were in critical condition.

The attack was one of the deadliest terror attacks in Belgium in decades. An Islamist gunman killed 32 people in the Paris region earlier this month, including many police and members of military.

In July, Belgian police shot and killed a suicide bomber in Paris. Police said the suspect was a 40-year-old man who was killed when officers shot him within 12 minutes of his attempt to detonate an explosive device in the heart of the city.

In 2010, the museum’s second-floor exhibits were evacuated after explosives experts discovered a device.

In addition to the French attacker, an American and a British student were stabbed to death at the museum in July.

___

Associated Press writers Raphael Satter in Paris; Peter Orsi in Brussels, Belgium; Catherine Herridge in New York; and Gregory Korte in Washington contributed to this report.