He's now resigned from the force.

A policeman's been accused of failing to intervene at the scene of the Florida school shooting.

The local sheriff's office says Deputy Scott Peterson was on duty at the scene when the shooting started, but did nothing. He's now resigned from the force.

17 students and staff died in the shooting.

Staff are today returning to the High School in Parkland, for the first time since the massacre.

Broward County Sheriff Scott Israel says the video evidence from the day of the shooting is damning, 'We may never disclose the video pending on the prosecution and the criminal case. But that I saw was a deputy arrive at the west side of building 12, take up a position and he never went in'.