SINGAPORE - The man who killed his wife and attacked his maid on Friday morning at Yuan Ching Road in Jurong had apparently planned to do so about three months ago.
A post in his Facebook account revealed that he had "bought what I need to do".
"Now, I just have to wait for three more things to be done," wrote Ken Ong Wei Poh, 37, on his Facebook status on Nov 13 last year.
Ong also wrote: "Destroyed my life and yet enjoying without no conscience. Always in self-denial and arrogrance, thinking that having money gives you all the right to destroy and play with someone (sic) life without any consequences."
He updated his Facebook status again on Dec 17: "One more thing done, two more to go before I do what I should have done long ago. Let the devil get what the devil deserve in due date."
It is believed that he was referring to his wife, Madam Karen Koh Siang Hua, 39, whom he had attacked with a knife at a condominium unit at Blk 9D Park View Mansion after their six-year-old son had left for school.
Ong is believed to have stabbed himself after injuring Madam Koh.
Filipino domestic helper, Ms Jamelarin Jasmen Corpuz, 37, was also injured when she tried to intervene. She managed to flee and ran down three storeys to the carpark while screaming for help.
Ong and Madam Koh succumbed to injuries after being sent to National University Hospital (NUH) on Friday. Ms Corpuz was also taken to NUH. Her condition is said to be stable, reported The New Paper.
According to an email titled "Jurong Murder" that was sent to the media at 8.11am on the same day, Ong ranted about his grievances with Madam Koh, a Malaysian resident.
It is understood that the couple, who have been married for six years, were in the midst of getting a divorce.
In the 2,050-word post, Ong wrote about how going back to school at the Building and Construction Authority's BCA Academy helped him regain his confidence.
But he claimed that Madam Koh had forced him to stop his studies to contest with her allegations in their divorce. Ong said that this was his "breaking point".
"In this family, I'm like the outsider and (Madam Koh) is the husband, I'm the housewife and he brought (home) a mistress, the maid," he wrote.
He also wrote that he was never treated as a man, husband, and was also not allowed to be a proper father during their 12-year relationship.
According to reports, Madam Koh first consulted a lawyer in July last year to file for a divorce.
Her lawyer, Mr Arul Suppiah, told The Straits Times that the couple's relationship had broken down and Madam Koh "could not stand that fact that he doesn't go to work and had depended on her financially for six years".
Madam Koh is one of the four directors of furniture company TYT Corporation, reported The New Paper. The other three directors are her mother, her younger brother and his wife.
Police have classified the case as unnatural death and investigations are ongoing.