Two federal officers fired shots during an encounter that killed ICU nurse Alex Pretti in Minneapolis, a Customs and Border Protection official told Congress in a notice sent Tuesday.

The notice said one Border Patrol officer fired his Glock and a CBP officer fired his, according to a notification to Congress obtained by The Associated Press.

Investigators from CBP’s Office of Professional Responsibility conducted the analysis based on a review of body-worn camera footage and agency documentation, the notice said. The agency is required to report in-custody and certain other deaths involving its agents and officers to Congress.

A Customs and Border Protection official said in the notice that officers tried to take Pretti into custody and he resisted, leading to a struggle. During the struggle, a Border Patrol agent yelled, “He’s got a gun!” multiple times, the official said.

This is a developing story and will be updated.