An anonymous phone call was made to the Bangkok police, informing them that the Singaporean suspect who is believed to have killed his wife's lover would surrender in a few days.
A report in The Straits Times said that a spokesman for the Bangkok Metropolitan Police, Major-General Piya Uthayo, said last night that the police in the Bangkok suburb of Sutthisan received a call from a man.
The man asked what would happen if the Singaporean was to turn himself in.
However, Maj-Gen Piya said the police could not confirm if the caller was the suspect, 38-year-old Hsu Wei Hua.
He told The Straits Times: "We told him that the Singaporean can go to any police station. Then the man said that maybe the Singaporean would surrender in a few days."
The caller then hung up.
A warrant of arrest is out for Mr Hsu, according to the Bangkok police.
Mr Hsu is alleged to have stabbed his wife's lover, Thai drift-racing driver Ittiphan Kuwakorn, in a unit on the sixth floor of the Regent Home Condominium which he had bought for the wife.
The suspect was caught on the building's security camera and is seen engaged in a scuffle with a naked Mr Ittiphan.
Thai media reports said Mr Hsu was eavesdropping outside the apartment door for half an hour before forcing entry into the room by kicking the door in.
Upon entering, he found his 25-year-old wife, Ms Siriwan Yaemsi, in bed with Mr Ittiphan, who is also known as Wat Kumho.
According to the camera footage, both men started fighting outside the apartment. Mr Ittiphan was still naked.
The suspect then re-entered the apartment and emerged with a knife which he used to stab his wife's lover.
The footage also revealed that Mr Ittiphan had staggered back to the apartment unit before dying in the bedroom.
According to Thai media reports, Mr Ittiphan was stabbed in nine places including his chest, heart, back, and right hand.
Ms Siriwan called the police after Mr Kuwakorn died, and upon their arrival, they discovered the Singaporean man's passport at the scene.
Mr Hsu allegedly fled the crime scene in a BMW 325i that he had bought for his wife.
According to Lianhe Wanbao, Hsu married Ms Siriwan on Sept 25, 2009. His first marriage was to a Singaporean woman in 1997.
He reportedly owns a plastic moulding factory in Kallang and was a director at Tuas company in the same industry from 1998 to 2001.
A former business associate, who spoke on condition of anonymity, described Mr Hsu as someone who hated confrontation when The Straits Times visited the Tuas plastics manufacturing company.
He added that he and Mr Hsu had not been in touch and he could have changed in the more than eight years since they last spoke.
Employees from another company claimed they did not know him or anything about him.
The Thai police has yet to ask the Singapore police to help out in this case, reported The Straits Times.
