A 38-year-old German woman tourist alleged that she was sexually assaulted at Mamallapuram beac here on April 03, 2017 .
In her complaint to the police, the victim alleged that she was forcibly taken away by some men, a district police official said.
The official said the incident took place when the victim was taking a stroll along the sea shore in the tourist town of Mamallapuram.
The woman was taken to a hospital for medical examination and the probe is on, he said.
Several persons are being questioned and some of them have been detained, he added.