The accused had kidnapped the women, who are sisters, from Gular Road in Aligarh on July 10 and had reportedly planned to sell them to a brothel.
Police have registered a case of kidnapping in the matter and maintained that the accused would be charged under rape laws only after the women undergo medical examination.
"They will be sent for medical check-up and their statement will be recorded in the court. Only then can anything be said. For the time being, the police are trying to trace two youths - Nazim, a resident of Shah Jamal, and Shoeb of Baraula Gate - named by the victims' father in an FIR," circle officer Ram Mohan Rao said.
The women, students of MA and BA in a city college, were going to deliver food to their father, a lock manufacturer, on July 10 when a driver of a van allegedly stopped them. While the driver tried to strike a conversation with the sisters, four accomplices sitting inside the vehicle pulled them inside and sped off.
The men allegedly made the sisters sniff some intoxicants, after which they found themselves in an unidentified place. The women told the police that the accused confined them there for seven days and raped them turn-by-turn.
On Friday, the five accused had planned to sell them off, but decided to drop them off near the Hathras railway station.
The victims were later found in the waiting room by the Hathras Government Railway Police, who in turn informed their family.