Police are seen after a shooting in Utrecht, Netherlands, March 18, 2019. REUTERS/Piroschka van de Wouw

UTRECHT, Netherlands (Reuters) - Three people were killed and nine others injured in a shooting in a tram in the central Dutch city of Utrecht, the mayor said, Dutch broadcaster NOS reported.

Police said they were looking for a 37-year-old man of Turkish origin identified as Gokmen Tanis.