Investigation underway in France's Strasbourg tram collision: mayor

Two trams collided in a tunnel in the eastern French city of Strasbourg on Saturday, injuring at least twenty people, the authorities said.

The trams collided near Strasbourg's main train station, one of the busiest in France outside of Paris. In 1994, Strasbourg was the first major French city to re-introduce trams, after the service closed in 1960.

Since the re-introduction, there have been no major accidents. "Twenty people" have been injured, said a spokesman for the prefecture, citing a preliminary estimate. He added that the cause of the accident had not yet been established.