Two trains collided in Egypt’s coastal city of Alexandria on Friday killing 36 people and injuring more than 100 others, a health ministry spokesman said.

State newspaper al-Ahram verified that at least 36 bodies had arrived at hospital morgues in Alexandria province. Public prosecutor Nabil Sadek ordered an urgent investigation, it said. More so, a medical official told state TV some wounded people were still stuck in the trains.

The crash near the suburban Khorshid station on the route to Cairo, derailed the engine of one train and two cars of the other, the Egyptian Railway Authority said.

A railroad switching error was the most likely cause of the collision, a security source.

Footage on state television showed dozens of people crowding around the damaged train cars, with bodies strewn on the ground.

“The train I was riding was going very quickly,” said passenger Moumen Youssef. “I found myself on the floor. When we came out, we found four train cars crushed and a lot of people on the ground.”