Santosh Bhikaji Kekan, resident of Mharal village in Shahad tehsil of neighbouring Thane district, was held from a hotel at Shil-phata, Kalyan, a senior police official said.
Kekan had fled from his home in Mharal village.
According to the complaint lodged by the 19-year-old woman, as she was travelling in the ladies compartment of south Mumbai-bound train on the night of December 3, a man entered the compartment around 11.50 pm, and robbed her of her two mobile phones, ear-rings and a purse.
The woman fell on railway track and sustained multiple injuries, while the man fled.
Police zeroed in on the culprit through a CCTV footage showing him alighting from a car outside the Mansarovar railway station on the same night. Kekan was identified by tracing the car's owner.
Further probe is on.
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