The victim, travelling from Gaya to New Delhi, was molested by Ameen Sheikh (28), who was in an inebriated condition, when she was asleep last night, station officer of GRP Ratan Singh Yadav said.
On reaching Mughalsarai railway station today, she lodged an FIR at Government Railway police station here, Yadav said.
The accused has been arrested, he said.