The four youths identified as Maha Singh, Sarjeet, Vivek and Sahwan, all aged around 20, were arrested last night, police said today.
According to police, the arrested youths attacked the woman and her brother while they were on way to Shani Mandir near old Delhi road on Saturday.
They thrashed and chased away the woman's brother, and forcefully took her to an isolated location nearby where she was raped, police said.
On the complaint made by the woman, Udyog Vihar police lodged an FIR against the four accused persons, they said.
The accused were produced before the court today.
