"The incident took place around 9:30 AM, when the victim, identified as Waqil Khan, was standing at the platform to board a Churchgate-bound train," a senior railway police official said.
As per preliminary investigation, Khan fell on the tracks following a bout of giddiness, and was hit on the head by an approaching train, he said.
The victim was rushed to a hospital, where he succumbed to his injury, the official said.
The inquiry into the incident would be conducted once the CCTV footage of the mishap is obtained, he said.