The ex-father-in-law of Hong Kong model Abby Choi Tin-fung and his eldest son have been charged with murder after they were arrested on suspicion of killing her, police have said.

The force on Sunday also said Choi’s former mother-in-law, 63, was charged with one count of perverting the course of justice. The three suspects, aged 31 to 65, were arrested on Friday and will be brought before Kowloon City Court on Monday.

As of Sunday morning, Choi’s ex-husband – the youngest son of her former father-in-law – was still being held for questioning after he was arrested on Saturday.