Two trains collided head-on just outside Amsterdam on Saturday, injuring at least 60 people, up to 20 of them seriously, Dutch transport police said.
A spokeswoman for the Dutch capital's fire service put the number of seriously injured at 56, adding "tens of others were slightly wounded."
The accident happened at around 6.30pm when a local train leaving Amsterdam hit another train coming from the opposite direction, Dutch rail network Prorail spokeswoman Babet Verstappen told AFP.
But both trains were travelling relatively slowly at the time, Dutch NOS television reported: each moving at around 50 kilometres-an-hour.