Malaysian police are still looking for the Singaporean man who allegedly murdered his wife's lover in Malaysia on Sunday morning.
Quah Tee Keon, a taxi driver here, understood to be in his 40s, is believed to have stabbed and slashed the 32-year-old Chinese national at Quah's home in Triang, Pahang.
He later slashed and seriously wounded his wife Loong Mei Ling 33.
Malaysian media reported that Ms Loong, a Malaysian, had returned to the Pahang home a month ago because of family problems.
She is in stable condition in hospital, but the man was pronounced dead hours after the attack.
Former neighbours of Quah in Toa Payoh said he often fought with his wife, sometimes nightly, and the quarrels would often turn physical.
"The man is very hot-tempered; sometimes you would hear him throwing plates, chairs, furniture," said a housewife in her 40s who wanted to be known only as Mrs Goh.
Ms Loong, who was Quah's second wife, would be silent.
Another neighbour, a retiree who did not want to be named, said Quah lived alone in the two-room flat from the mid-90s until last year.
Quah and Ms Loong registered their marriage in 2004 and moved to a new flat in Woodlands Avenue 1 in the middle of last year.
The neighbour said he often took his taxi for a full 24-hour shift, coming back to his flat for a nap in the morning.
The couple's arguments were often over money, and they also had loan shark troubles, neighbours said.
Pointing to the telltale red and black paint stains outside the house, Mrs Goh said the trouble lasted up to a few months before they moved.
The couple kept a lower profile at Woodlands though neighbours still heard the occasional loud argument.
Malaysian media reported that Quah's three boys, aged between two and six, from his first marriage are with their mother's family in Pahang.
When The Straits Times visited the three-room flat in Woodlands yesterday evening, no one was home.