Due to the incident, the Metro train services were disrupted for over an hour.
The victim, identified as Ganeshchandra Prasad, hailing from Madhubani district in Bihar, ended his life by jumping in front of the Ghatkopar-bound Metro train at Sakinaka station at around 9.20 AM, they said.
The reason that drove the man to commit suicide was yet to be ascertained, a police official said, adding that the body has been sent for post-mortem.
Following the incident, the train was evacuated and retracted from service, a Mumbai Metro spokesperson said.
The services resumed at around 10.45 AM, he added.