Guard in Denver school shooting opened fire

A security guard credited with capturing one of the two suspects in this week’s suburban Denver school shooting fired his weapon inside the school, a law enforcement official with knowledge of the case told the Associated Press on Thursday.

The security guard has not been identified, but is a former Marine who has stayed out of the public eye since Tuesday, when two suspects opened fire at the STEM School Highlands Ranch, killing one student and injuring eight.

Two news organizations cited anonymous sources reported that authorities are investigating whether the guard mistakenly fired at a responding sheriff’s deputy and may have wounded a student.

The law enforcement official spoke to the Associated Press on anonymity because the official was not authorized to make information public. The official did not address whether anyone was hit by the security guard’s firing.

An attorney for the guard declined to directly answer questions Thursday about the media reports.