Courthouse Shooting in Salt Lake City Utah (UPDATE)

This Feburary 2012 photo, provided by the Utah Department of Corrections, shows Siale Angilau.AP/Utah Department of Corrections

The police tweeted that they were on the scene at 9:49 a.m. but Rydalch said several law enforcement officers were already inside before the shooting, as they prepared to testify at the gang-related trial.

The case of Siale Angilau was being heard in Judge Tena Campbell’s courtroom and was set to be the last in a series Tongan Crip-related cases.

Witnesses at the scene reported seeing someone carried out of the courthouse on a stretcher, who was believed to be the victim of a gunshot wound.

Police and Rydalch declined to comment on who, if anyone, had been shot.

A handful of Salt Lake City police officers were in the building about 9:55 a.m., but U.S. Marshals were also called to the scene.

Most local police were being kept out of the building, which was put on lock down shortly after the incident.

The lock down reportedly will be in effect until at least the early afternoon.

The new federal courthouse building has been open for a week.

UPDATE: A defendant, Siale Angilau, 25, died at a hospital after he was shot by a U.S. marshal in the chest as he rushed the witness with a pen in an “aggressive, threatening manner,” the FBI said in a news release.

Angilau was one of 17 people named in a 29-count racketeering indictment filed in 2010 accusing gang members of assault, conspiracy, robbery and weapons offenses.

Under standard procedures, Angilau was not restrained in the courtroom, the FBI said.

According to the report, at least six shots were fired.