Alex Kwong, his sibling Anthony Kwong and their dad Kwong Kau are accused of murdering 28-year-old Abby Choi in a gruesome case which has gripped many people in the city.

Kwong's mother Jenny Li faces one count of perverting the course of justice. The four were detained in custody without bail.

Ms Choi, a social media influencer who had more than 100,000 followers on Instagram, went missing last Tuesday.

Her most recent post was on 15 February, featuring a photoshoot she had done with fashion publication L'Officiel Monaco.

On Friday, police found her dismembered body, including her legs, in a house rented by Kwong Kau in Lung Mei Tsuen, a suburban part of Hong Kong.

Authorities on Sunday then discovered a young woman's skull, which was believed to be Ms Choi's, in a cooking pot that was seized from the property.

A hole on the right back of the skull is where she was struck in the fatal attack, officials believe.

Police also found a meat slicer and an electric saw at the scene, along with several ribs, hair, and human tissue.

Forensic pathologists discovered a small number of human bones in another cooking pot, said Superintendent Alan Chung. They are still trying to locate her hands and torso.

Ms Choi had financial disputes involving tens of millions of Hong Kong dollars with her former husband and his family, according to police. HK$1m is the equivalent of about £106,000.

Officers added that "some people" were unhappy with how Ms Choi handled her financial assets.

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Her current husband, Chris Tam, has paid tribute to her. He was quoted in a Facebook post as saying: "When Abby was alive, she was a very kind person and always wanted to help people.

"I feel anyone who had a chance to be her family or her friend are blessed."

The gruesome killing has gripped Hong Kongers as the special administrative region of China is widely considered safe with a very low level of violent crime.

Monday's hearing was adjourned until May.