It is being treated as an incident and not accident, Central Railway chief public relations officer Swapnil Nila told PTI

PCSO CK Prasad visited the site earlier in the day and carried out an inspection, he said

"Relevant information is being collected and efforts to identify the root cause are being made. The principal chief safety officer (PCSO) will conduct an inquiry into the incident that occurred around 9.10 am," he said

"From preliminary investigation it is found out that the passengers were travelling on the footboard," Nila said

To avoid similar incidents in the future, all new locals will be introduced with an automatic door closure system, while existing trains will be retrofitted with it, he said

A railway team reached the spot at Mumbra station in the evening and took measurements of the gap between the two fast line (Up and Down) tracks there, other officials said

As per Central Railway officers, eight passengers were found injured in the gap between two parallel railway tracks between Mumbra and Diwa railway stations in the morning, while five other passengers onboard the CSTM-bound Kasara-10 local sustained minor injuries

Railway officers said Karjat-11 local from CSMT was crossing Kasara-10 local at Mumbra when the incident took place. It was first reported by the train manager of a Kasara-CSMT train, officials said