Khaw Kim Sun, 53, killed his wife, Wong Siew Fing, 47, and their second child, Lily Khaw Li Ling, 16, with deadly gas in 2015.

The sisters spoke by phone about plan to bring children to France and Spain just one day before tragedy struck

Wong Siew Fong questions moral standards of jailed Malaysian professor Khaw Kim Sun, the man her murdered sister fell for.

Khaw Kim Sun was found guilty on Wednesday of murdering his wife and daughter using a gas-filled yoga ball, in a case that has gripped the city. A former Lantau resident tells how she came to rent his decrepit 1,400 sq ft house in the tiny village of Tong Fuk, and how Khaw kept up the pretence of a popular and sociable family man struggling to deal with personal tragedy.

Wong Siew Fing expresses deep regret at the failure of her relationship with Khaw Kim Sun, two years before Chinese University professor murdered her with carbon monoxide.

Malaysian professor Khaw Kim Sun was found guilty on Wednesday of murdering his wife and daughter by a unanimous jury verdict. This is how police came to solve one of the city’s most intelligent murder cases in recent times.

Love triangle, while not relied upon by prosecutors, was a key feature of trial that saw Khaw Kim Sun, 53, convicted of killing his wife and teenage daughter with deadly gas.

Khaw Kim Sun, 53, has been convicted of killing wife and teenage daughter with deadly gas.

In trial of Malaysian professor accused of killing wife and daughter, judge says main issue is: ‘Who put the yoga ball in the Mini Cooper and why?’

Accused Khaw Kim Sun had suggested his wife got caught up in teenage daughter Lily’s suicide – but defence lawyer said it could all have been an accident

Former colleague portrays anaesthesiologist accused of killing wife and daughter as a much sought-after doctor willing to push boundaries.

Medical scientist tells jurors in Khaw Kim Sun’s case that releasing carbon monoxide in courtroom could wipe everyone out, while defendant’s friend calls him ‘very clever man who knows how to take care of things’.

Khaw Kim Sun had been attending a university event just two hours before a passer-by found the victims unresponsive in their car, his lawyer tells court.

Department head at Chinese University, Gavin Joynt, tells High Court he would have sent Malaysian professor Khaw Kim Sun’s rabbit test proposal back for major revision, while another academic calls experiments ‘not very useful’.

Chemist tells High Court during Khaw Kim Sun’s murder trial that simulated concentrations were so high he had to get a different reader – and even that one could not read it all.

School pal tells court Lily Khaw was her most ‘rational’ friend and on the day she died did not want to go out for a burger as she had homework to do.

Video interview played for jury shows defendant claiming she did not have a ‘full role’ in the experiments that prosecutors said were set up as a ruse.

Police officer testifies that Khaw Kim Sun, who is accused of murdering wife and daughter, told him he thought pressure over school work may have caused teenager to commit suicide.

Khaw May Ling initially thought that former Chinese University professor Khaw Kim Sun was joking about death of his wife and other daughter, until he sent pictures

Close friend reveals wife Wong Siew Fing’s deteriorating mental state and tells High Court marriage had been an unhappy one ‘for some time’.

Court told that Malaysian professor continued to live with wife he was cheating on, while she only made meals for herself and four children.

Khaw Kim Sun set up research project with ‘no value’ to obtain carbon monoxide he later used in the murder plot, High Court hears.