Police on Friday arrested a 26-year-old man on suspicion of using a drone to film people having sex, in what was said to be the first voyeurism case involving the use of the flying gadget.

Officers said the drone contained more than 20 videos of victims getting intimate or exposing their private parts at night, adding that the machine’s light had been covered up during the filming process.

They noted that the footage were filmed outside homes and hotel rooms. Sources said they involve Conrad Hong Kong and JW Marriott in Admiralty, as well as Gloucester Luk Kwok in Wan Chai.

The force said the case came to light after the suspect's drone crashed in Central and was handed over to the police.

Officers are now probing whether the videos had been leaked online.