A mother and her daughter have been revealed as the two people who were killed by a speeding train in a tragedy that also affected rail services between Slough and London, according to reports.
Police at Slough station are investigating the incident after the two people died just after this morning's rush hour (23 September).
A British Transport Police spokesman said the deaths were being treated as potential "foul play".
The fatal incident hit services on four train lines between Berkshire and London. Two lines were closed following the deaths of the family members, while a line to and from Paddington was running a reduced service.
A Network Rail spokesman said disruption to services would continue during the afternoon but was expected to lift by the afternoon rush hour.
A police spokesman said: "The station is currently closed while enquiries continue.
"The incident is currently being treated as suspicious. Officers are working to identify the deceased and a full investigation has been launched."
More to follow.