A 20-year-old woman was allegedly sexually assaulted by a 40-year-old man in the ladies' compartment of a moving Mumbai local train when she was travelling alone on Wednesday morning. The accused was arrested after nearly 8 hours of the incident, a GRP official said, the PTI reported on Wednesday.

The woman was reportedly headed towards Belapur in Navi Mumbai where she was supposed to appear for an exam, the news agency reported.