The Justice Department’s conclusion follows an investigation of the 1921 atrocity in Oklahoma in which up to 300 Black residents were killed.

Some law enforcement members participated in arson and murders that occurred during the 1921 race massacre in Tulsa, Oklahoma, according to a U.S. Department of Justice report released Friday. The report,

A new federal review finds the 1921 Tulsa Race Massacre was the result of systematic, racially motivated violence targeting Black residents of the city’s Greenwood District.

The deadly 1921 rampage was a coordinated, military-style effort to destroy a prosperous Black neighborhood, a new report says.

A Justice Department review of the 1921 Tulsa Race Massacre confirmed law enforcement, national guard and officials failed to act or took part in the attack.

The Department of Justice found in a newly released report that though the Tulsa Race Massacre was a “systematic” and “coordinated” attack that transcended mere mob violence, any legal repercussions are no longer possible in light of the statute of limitations.