Police are hunting for a gunman in the Dutch city of Utrecht following a shooting on a tram in which three people were killed, ONA reports citing BBC.
Five others were injured in the incident, which the authorities say appears to be a terrorist attack.
Police are looking for a 37-year-old Turkish man named as Gokmen Tanis and have warned people not to approach him.
Schools have closed and security has been increased while counter-terrorism police work to find the gunman.
Prime Minister Mark Rutte said the country had been "jolted by an attack", which he described as "deeply disturbing".
"We cannot exclude a terrorist motive," Dutch anti-terrorism co-ordinator Pieter-Jaap Aalbersberg told a news conference on Monday.
The tram attack happened at about 10:45 local time (09:45 GMT). One witness told local media that "a man started shooting wildly".
Another witness told Dutch public broadcaster NOS that he had helped an injured woman after the tram came to a stop.
"I looked behind me and saw someone lying there behind the tram," he said. "People got out of their cars... and they started to lift her up.
"I helped to pull her out and then I saw a gunman run towards us, with his gun raised," he said. "I heard people yell 'Shooter! Shooter!' and I started to run."
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