Police on Sunday arrested two brothers for allegedly repeatedly raping a 22-year-old woman over a period of four days here in Amar Colony.The accused have been identified as Shatrughan and Bharat.According to police, the victim is a native of Kanpur, who came to Delhi in search of work on June 16. The mother of the accused had offered her help in finding work.A case has been registered and further investigation is underway.