A 37-year-old policeman died on Saturday after apparently falling ill in his office at police headquarters in Wan Chai.
Police said when another officer went to work this morning, he found his colleague lying unconscious on a folding bed at around 9 am.
He was certified dead minutes later.
The force said the officer, surnamed Hui, worked in the Hong Kong Island regional crime unit. He was off duty at the time.
Officers said they didn't find any food or drinks in the office, and they will continue to probe what happened.
The force expressed condolences to his family and said they will do everything they can to help with his funeral arrangements.
Last updated: 2021-02-06 HKT 21:38