Paramedic Kelly Girard had just finished her shift at 10pm and was heading home over the Dr Geoffrey Hunter Bridge when a large group of children surrounded the ambulance she was driving and pelted it with rocks.

"I had just knocked off work and was heading through the roundabout when a heap of kids started throwing rocks," she said.

"The ambulance got covered in rocks.

"I was frightened for my life, the noise was so loud, it startled me. I slammed on the brakes thinking I was going to crash when the rocks continued to hit the ambulance."

Ms Girard estimates there were about 20 children on either side of the bridge, the Tourist Information Centre and Jellicoe Park sides, who continued to throw rocks even when she pulled over.

"They were not deterred by me stopping," she said.

Luckily, she was uninjured during the attack, as the majority of rocks went through the back windows.

It was also extremely lucky that there wasn't a patient or another officer in the back, as Ms Girard believes they most certainly would have been injured by rocks or glass.

"If an officer and a patient were in the back, they both would have been injured, as the rocks went straight through the back windows and onto the bed," she said.

Not only that, but if Ms Girard had been on her way to a job at the time, her response time would have been delayed which could have meant the difference between life and death for a patient.

In fact, after she had pulled over she did receive a call about a job to attend.

"It delayed my response because I had to go back to the station and pull everything out of that ambulance and put it in another vehicle," Ms Girard said.

The attack resulted in significant damage to both the back windows of the ambulance, which will need to be replaced. The red and blue lights on top of the ambulance were also broken and there are several dents in the sides of the vehicle. 

"It took the ambulance off road and has left us with only one ambulance," Ms Girard said.

"We're working out of one car now."

Having been an ambulance officer in Moree for the past seven years, Monday's attack wasn't the first time Ms Girard has been hit with rocks, however she said it's the most damage she's experienced.

"I would have had it happen to me twice in the last six months," she said.

"They were both severe attacks.

"We try to avoid the bypass but if we have to take patients out to the airport, the bypass is a smoother run, so you can guarantee a rock will hit you once or twice.

"So we started going on the main road, and now we are having problems at the bridge and roundabout."

Ms Girard said the Tourist Information Centre park area has gotten particularly bad over the past six months.

"I always slow down when I come onto the roundabout there, because sometimes kids run out and lay on the road, so you've got to stop, and they just laugh and carry on," she said.

"We'll have our lights and sirens on and they just stand in the middle of the road and won't move. We have to stop. If we're on our way to a job, it could have serious consequences; it could be one of their family members we're trying to help."

Ms Girard credited Moree police for their quick response on Monday.

"A police car was actually driving past as I pulled over, so I waved them down and they stopped," she said.

Unfortunately all the police were able to do was move the children on, as Ms Girard wasn't able to identify exactly who threw the rocks - "I knew what direction they came, but I was too busy watching the road to see who did it," she said.