"Three people were killed as they fell out of over crowded trains on the Central line," said a GRP official.
While two victims have been identified, the identity of the third one is being ascertained, officials said.
According to police, Deepesh Kadam (24) boarded a train for Kalyan but fell down between Ghatkopar and Vikhroli. While Ashok Shelar (34) lost his life after he fell down near Vikhroli station. The third victim fell near the same station.
Police said the trio were taken to the nearby government run Rajawadi hospital but were declared dead before admission.
Several Central Railway locals were cancelled today owing to the megablock, where in authorities began overhauling of mechanisms on railway lines since yesterday.