The former in-laws of a Hong Kong model have been arrested on suspicion of murder after her legs were found in a fridge days after she went missing.
Police also found human tissue in pots of soup when they entered a property in their search for Abby Choi on Friday.
Superintendent Alan Chung said: "Police have found that the flat was arranged by cold-blooded killers meticulously.
"Tools that are used to dismember human bodies were found in the flat, including meat grinders, chainsaws, long raincoats, gloves, and masks."
Police have not been able to locate Ms Choi's head, torso or hands.
The 28-year-old model, who was reportedly last seen on Tuesday, appeared on the front cover of the latest edition of L'Officiel Monaco magazine.
She had more than 80,000 followers on Instagram and was reportedly regularly seen mingling with celebrities.
The property where her legs were found is in Lung Mei Village in Tai Po, according to local media reports.
Her ex-husband's father is believed to have began renting it a few weeks ago, Supt Chung said.
Officers found Ms Choi's identity card, credit cards and other items in the house, he added.
Police are searching for Ms Choi's ex-husband but have arrested his parents and brother, according to Mr Chung.
They will face murder charges.
Mr Chung said authorities believe Ms Choi had financial disputes involving tens of millions of Hong Kong dollars - with HK$1m the equivalent of about £107,000.
The police superintendent said Ms Choi's ex-husband, his family and "some people" were believed to be unhappy with how the model handled her financial assets.