BEIJING -- China sends its sympathies to the casualties in Thailand caused by a train colliding with a construction crane, China's foreign ministry said in Beijing on Wednesday.

According to reports, at least 22 people were killed and 55 others injured after a passenger train collided with a collapsed construction crane in northeastern Thailand's Nakhon Ratchasima province on Wednesday.

READ MORE: Report: At least 22 dead, 55 injured after crane collapse derails train in Thailand

"We are closely following the situation," the ministry's spokesperson Mao Ning told a regular press briefing, adding that the cause of the accident is still under investigation.