A 25-year-old woman home guard was allegedly molested inside a Delhi Transport Corporation (DTC) bus here on Wednesday, police said.
The accused was thrashed by a mob, hospitalised and later booked.
The incident took place in a low-floor bus in east Delhi's Madhu Vihar area.
Police said the accused, Ranjit, 32, was handed over to police after he was beaten up by other passengers on the bus.
His leg had a fracture and he was taken to Lal Bahadur Shastri Hospital, said a police officer. He was discharged after treatment and booked for molestation.
The incident allegedly took place after the home guard, in uniform, boarded a bus plying between Anand Vihar and Mehrauli to go to a police station where she was posted. As soon as the bus reached Indraprastha Extension, the accused started misbehaving with her.
When she resisted, he even reportedly threatened to abduct her, said the officer.