Update: Neo Chun Zheng was charged on Saturday (Nov 28) with the murder of Ms Soh Yuan Lin, who is believed to be his ex-girlfriend.
The incident took place outside the accused's home at Boon Lay Drive on Thursday night.
Residents of the HDB block told local media that they overheard the couple arguing as well as the man's mother attempting to stop the fight.
Neo, 26, is believed to have stabbed Ms Soh in the neck with a knife measuring 10cm long. The 23-year-old later died of her injuries at Ng Teng Fong General Hospital.
The Straits Times reported that the prosecution requested for Neo to be remanded while investigations are on-going.
His case will be heard in court again next Friday (Dec 4).
If found guilty of murder, Neo faces the death penalty.
A 26-year-old man has been arrested in connection with a murder at Boon Lay Drive on Thursday night (Nov 26).
According to a statement by the police, they received a call for assistance from a unit at Blk 268B Boon Lay Drive at about 8.16pm on Thursday.
Upon their arrival, a woman was found lying motionless in the unit. She was taken to Ng Teng Fong General Hospital where she was pronounced dead on the same day at about 11.14pm.
Shin Min Daily News quoted neighbours as saying that a loud quarrel between a man and a woman outside the unit was heard last night. They told the Chinese evening daily that the suspect's mother could also be heard asking the couple to stop their argument.
Lianhe Wanbao reported that the victim, 23-year-old Soh Yuan Lin, wanted to break up with the suspect, Neo Chun Zheng.
Shin Min reports also identified Soh as a former Scoot flight attendant.
According to Shin Min, an argument was believed to have started over allegations that Soh was cheating on Neo.
A neighbour told the Chinese Daily that Neo's mother was crying and asking her son repeatedly: "Why are you carrying a knife? You will go to jail."
She was still crying after Soh was attacked and fell to the ground, and stood beside the body until the police arrived, Shin Min reported.
Another neighbour Shin Min spoke to alleged that Neo was acting strangely, and even smiled when the police were questioning him.