MILAN, Mich. – A man serving a 40-year sentence for his role in an international child pornography ring has died following a fight at a federal detention center in Michigan, authorities said Friday.

Christian Maire, 40, of New York, was pronounced dead following a violent encounter involving seven inmates Tuesday at the Milan detention center about 50 miles southwest of Detroit, a statement from the Federal Bureau of Prisons said.

“It’s a horrible tragedy and it seems something like this should have been able to be avoided,” Maire’s lawyer Mark Kriger told the Detroit News on Friday.

The report referred to Maire as the mastermind of the child pornography operation.

international child pornography

Christian Maire, 40, died following an altercation at the Milan detention center in Michigan, officials said Friday. (Mugshot via Fox News)

Three of the other inmates involved were treated for serious injuries and two prison staff members had minor injuries, the statement said.

One of the injured inmates is Michal Figura, 36, an IT specialist at the University of Pennsylvania, two sources familiar with the attack told The News.

Figura’s lawyer declined comment Friday.

The prison attack happened about one month after Maire, Figura and other members of a sex ring that hunted and manipulated children into performing sex acts online, were sentenced to decades in federal prison.

Details of how Maire was killed weren’t immediately released, but the FBI is investigating the death as an apparent homicide.

Meanwhile, one source familiar with the investigation told The Detroit News that at least one attacker was armed with a shiv or homemade knife.

The prison houses approximately 1,370 inmates. It was placed on “limited operational status” with visiting suspended.