Taiwan investigates train crash that killed 18

Taiwan's president pushed for a swift investigation Monday after an express train derailed on a coastal tourist route, killing 18 people in the island's worst rail accident for 27 years.

The crash on the popular east coast line Sunday, which left the Puyuma Express lying zig-zagged across the tracks, also injured 187 passengers.

Among those who died, the youngest was nine years old.

Two students aged 12 and 13 from a junior high school in Taitung -- where the train was headed -- were also killed, according to the transport ministry.

Officials said Monday that a small number of passengers were still unaccounted for and that the search effort was continuing at the accident site in the northeastern county of Yilan.

Cranes were brought in overnight to lift the Puyuma Express coaches away from the southbound track. All eight carriages derailed and five had flipped onto their side.

Crane operators told an AFP reporter at the scene that work had been hampered by wet ground due to recent rain, so stabilising platforms were being brought in for the cranes.

Train services have partially resumed, using the northbound track.

President Tsai Ing-wen arrived early Monday at Xinma station, near where the train derailed.

"Everyone is concerned about the cause of the incident and I've asked prosecutors to clarify the situation... and the cause soon," she told reporters.

"At this difficult time let us all pray for the injured and hope the deceased can rest in peace."