They left the girl and her friend there after taking away their mobile phones, he said.
However, Tripati claimed that the accused during questioning had told that the victim and her friend were not driving the car but were talking to each other when they intercepted them near the drainage.
"There has been some contradictions in the statement given by the complainant and that of the accused," Tripati said, adding they will investigate the matter.
Initial medical examination of the girl has revealed no internal injuries, Tripati said.
"We are waiting for the final pathological report. We will not spare anyone in this case as this crime is unpardonable," he said.
Asked how police zeroed in on the culprits, the senior police official said the youngsters were coming back after playing cricket and were carrying the cricket kit with them.
"We investigated which all are the local teams playing cricket and zeroed in on the suspects," Tripati said adding two motorcycles, cricket bats, wickets, helmets and three mobile phones were recovered from the accused.
He said the arrested youth have no past criminal records.
The victim is admitted to a hospital and her condition is stated to be stable.
A case has been registered and further investigations are on.
In New Delhi, Uttar Pradesh Director General of Police Vikram Singh said police will ensure that all culprits will be booked.
"We have arrested five persons in this regard. We will ensure that all culprits are booked," Singh said on the sidelines of Chief Ministers Conference on internal security.
... contd.