SHE was so incensed when she suspected her husband of cheating on her that she picked up a knife and attacked him.

The incident which took place in the couple's flat at Serangoon Avenue 2 left her husband Mr Choong Weng Keong with abrasions on his body and a cut on his right arm.

He sought treatment and was given two days' medical leave.

On Tuesday, a district court sentenced provision shop owner Jirapan Choong, 39, to three months in jail.

The Singapore permanent resident shrieked and appeared shocked when District Judge Hamidah Ibrahim meted out the sentence.

Their marital discords began in 2005 after her husband, a Singapore Armed Forces personnel, returned from a training stint in Thailand, court papers said.

Choong accused her husband of having an affair with a Thai woman whom he had met there. On May 8, a heated argument between the couple erupted.

In a fit of rage, Choong grabbed a cake knife with a 20cm-long metal blade and assaulted her husband.

In mitigation, her lawyer Mr James Bahadur Masih told the court: 'Being a woman, she could not withstand the frustration and anger'.

He added that a cake knife had been used and could not have caused serious hurt.

However the judge reminded him: 'It's still a knife and not a case of a single abrasion. If their roles were reversed, you'd be throwing the book at him.'

The couple have an 18-year-old daughter and still lived together in the flat even after the incident. Her husband was not in court.