Lucknow: One person was arrested in connection to the attack on a Swiss couple on October 22 in Fathepur Sikri, informed police officials on Thursday.
Additional Director General of Police (Crime) Chandra Prakash said the arrest was made from the Agra-Rajasthan border.
He declined to reveal the identity of the arrested person. He said the Swiss couple - Quentin Jeremy Clerc and Marie Droxz -- were found lying wounded on a roadside on October 22 and some locals informed police about the incident.
They were picked up by police and taken to a local private hospital in Agra where first aid was given. The couple refused to lodge an FIR and requested the police to allow them to go for further treatment to Apollo hospital in New Delhi. Police ceded to their request.
Police on its own lodged a complaint and a probe is underway, he said.
"We are trying to arrest all the four persons involved in the incident," the officer added.
On Thursday, External Affairs Minister Sushma Swaraj asked for a report from the Uttar Pradesh government on the assault on the Swiss couple.