Eyewitnesses have described the moment shots were fired on a tram in Utrecht.

Police have confirmed a number of people are injured following a shooting on a tram in the Dutch city. 

At least one person has been killed. 

READ MORE: Utrecht shooting: Multiple injuries after 'shots fired on tram' 

Those on the tram that escaped have told of their horror as the incident unfolded. 

Speaking to RTV, an eyewitness called Jimmy de Koster said he saw four men shoot a woman who dropped to the ground as she screamed: "I didn't do anything".

"I came from work when it happened. I was standing at the traffic lights in the square and see a woman, I think she is between 20 and 35.

"At that moment I heard pang pang pang three times, four men walked very fast towards her and they tried to drag her away and then I heard pang pang pang and those guys let go of that woman again."

Another eyewitness told NRC he saw a man stand up and start shooting "with a big gun".

"I was in the back of the tram. He shot around, but seemed to be aiming at people sitting on the benches - everyone ducked away," she said.

"The conductor did not open the doors immediately. Two boys next to me kicked in a window, so I fled outside. More people did that. "

Several emergency response teams are at the scene, with the area believed to be cordoned off. 

Anti-terror police are the scene with reports of multiple shooters. 

Primary schools in Utrecht have been put on lockdown.

As of yet no arrests have been made