At least 20 people are believed to be injured after two cranes collapsed into a row of buildings in a town in the Netherlands, according to reports.

The accident took place at the Juliana Bridge in Alphen aan den Rijn – a town in the west of the Netherlands where about 100,000 people live.

The cranes were reportedly renovating the bridge when they collapsed into the buildings. Local emergency services wrote on Twitter how there were "reports of several wounded" but no number has been confirmed yet.

Ton Koot, a spokesman for the local fire brigade in Alphen aan den Rijn, told Dutch broadcaster NOS a special search and rescue team is on the scene in order to find anyone trapped in the wreckage, the Associated Press reported.

The cranes carrying a piece of the bridge crashed into a shop selling second-hand goods and a shop selling artists supplies as well as other properties, according to Dutch News.

Footage of the incident was uploaded on to Twitter by eyewitnesses. The reason for the collapse is not known at this stage.