Surveillance footage form Marjory Stoneman Douglas High School shows former school resource officer Scot Peterson and his response to the shooting — which has been criticised after it was disclosed that he did not immediately enter and confront the shooter — there last month.

The video, which media organisations petitioned the judge overseeing the case to release, was released Thursday and does not provide incredible detail, but does show Mr Peterson as he hears about the shooting before speaking into a radio handset on his shoulder and rushing over to the site of the shooting. Seventeen students and faculty were killed during the attack.

After that initial footage, the details in the footage illuminate very little further than that he travelled to the building, and apparently did not immediately enter.

After speaking into his radio, Mr Peterson can be seen making his way to the building where students were being murdered in a golf cart. One of the angles that followed that progression showed the golf cart travelling down a corridor.

A final shot, which lasts roughly 26 minutes, shows what police say is Mr Peterson outside of the building — at least for a portion of the clip — while pixelated students file past him. It is hard to tell from the video if Mr Peterson is actually in the clip at times, as the figures are indistinguishable in the upper corner of the shot.

Mr Peterson was suspended, and then resigned, after the shooting when Broward County Sheriff Scott Israel reviewed video footage of the shooting, and heard witness accounts that indicated the former school resource officer had waited to enter the building during the massacre.

Florida shooting – in pictures Show all 10 1 /10 Florida shooting – in pictures Florida shooting – in pictures Police arrest a suspect in connection with the shooting at the Marjory Stoneman Douglas High School in Parkland, Florida Reuters Florida shooting – in pictures Parents wait for news after reports of a shooting at Marjory Stoneman Douglas High School in Parkland, Florida AP Florida shooting – in pictures Anxious family members wait for news of students AP Photo/Wilfredo Lee Florida shooting – in pictures Students being evacuated from the school AP Florida shooting – in pictures Students being evacuated from the school Getty Florida shooting – in pictures People gather waiting for word from students AP Florida shooting – in pictures Parents waiting for news on their children AP Florida shooting – in pictures People gather at a hotel where students were taken after the shooting Getty Florida shooting – in pictures Florida Governor Rick Scott speaks to the media as he visits Marjory Stoneman Douglas High School following the shooting AFP/Getty Florida shooting – in pictures Dr. Igor Nichiporenko, Medical Director Trauma, left, and Dr. Evan Boyer, Medical Director, Emergency Services, speak about treating victims and the suspect at a press conference outside Broward Health North hospital AP

Since then, Mr Peterson has fought back on the characterization of him as a coward, saying through that he had provided valuable help to the special forces team that entered the building. That included providing those officers with keys to the building, as well as providing them with a drawn diagram of the building they were entering.