The number of people believed killed in a train crash in Egypt has been revised down to 19 from a previous figure of 32.

Health Minister Hala Zayed also told reporters that 185 people had been injured, up from a previous figure of 165.

Surveillance camera footage of the accident seen by AFP showed a speeding train barrelling into another as it rolled slowly down the tracks, sending a carriage hurtling into the air in a cloud of dust.

Most of those injured in yesterday's crash that occurred in the Tahta district of southern Sohag province suffered fractures.

President Abdel Fattah al-Sisi pledged tough punishment for those responsible for the crash, the latest in a series of rail accidents to plague Egypt. Such incidents are generally attributed to poor infrastructure and maintenance.

At the scene of the rail disaster, technicians worked to remove five dislocated and damaged carriages. By morning the crash area was cleared of twisted metal and debris.

One train was travelling between the southern city of Luxor and Alexandria on the Mediterranean coast, and the other between the southern city of Aswan and Cairo.