SALT LAKE CITY (AP) — A defendant died after being shot by a U.S. marshal on Monday during an attack on a witness during a trial in a new federal courthouse in Salt Lake City, the FBI said.

Siale Angilau, 25, died at a hospital after he was shot in the chest as he rushed the witness with a pen in an “aggressive, threatening manner,” the FBI said in a news release.

[Read the National Law Journal’s take on this story here.]