A van struck four people at a Dutch concert in the early hours of Monday morning, killing one and injuring three, hours after R&B artist Bruno Mars had performed, police said.
The van, possibly a white Fiat Doblo, drove off after hitting the festival goers and a police helicopter has been brought in to help in the hunt.
Local police said they have started a manhunt after the vehicle, described as a small white bus, fled the scene after a festival in the Netherlands.
An emergency message sent by authorities to cell phones in the area warned people to be alert for a Fiat Doblo with the number 257 as part of its license plate, the Reuters news service reports.
Strong natural disaster hits Osaka in western Japan; partial building collapses reported
One victim was a nine-year-old girl who was knocked down by a concrete wall at her elementary school as she walked by. The Japan Meteorological Agency says a quake with preliminary magnitude of 5.9 struck Monday around 8 a.m.
Numerous fans had camped in the area overnight and the collision took place close to one of the campsites a short distance from the festival.
The vehicle was driven away after the incident at the PinkPop festival in Landgraaf, which happened just hours after United States star Bruno Mars had performed his headline set.
The organisation said in a statement on social media that it was "deeply shocked" and added that their 'thoughts are with victims and their families'.
The three-day festival is attended by tens of thousands of fans.
Landon Donovan catches flak for supporting Mexico in World Cup
Oppo Find X to Offer a Whopping 93.6% Screen-to-Body Ratio
Brooks Koepka repeats as US Open champ
Stella McCartney Is Selling 46 Replicas Of Meghan Markle's Wedding Reception Dress
Historic video review helps France top Aussies in World Cup
Canadians back PM's handling of Trump attacks, tariffs: polls
Democrats, activists rally against Trump's family separation policy
Saudi-led coalition conducts air strikes on Yemen's Hodeidah airport
South Korea's creative tactic to confuse World Cup spy
Angelina Jolie urges efforts to rebuild Mosul: 'Worst devastation I've seen'
Paul Pogba claims he's the most criticised player in the world
Woman shouting ‘Allahu akbar’ slashes two with knife in France
Chelsea and Man United consider a swap deal involving Martial and Willian
Trump administration adopts border policy previously spurned as inhumane
Kolarov strikes sees off Costa Rica
Audi CEO Rupert Stadler arrested in diesel emission case
Gunman wounds 2 at Tumwater Walmart; fatally shot by bystander
USGA apologizes for unfairness of Shinnecock Hills
Data Propria, run by Cambridge Analytica alumni, working on Trump 2020 campaign
How Jose Mourinho reacted to Lionel Messi's poor performance against Iceland
Former American Idol Winner Scotty McCreery Is Married
Thousands evacuate as battle intensifies near Yemen airport