HISTORY OF VIOLENCE: (Right) Casey Sabrina Ng has been in and out of jail since 2000. A bloodied Madam Toh Siew Hong (left) after the attack.

Don't let Casey Sabrina Ng's small size fool you.

She has a history of violence. Once she is riled up, she becomes a hellcat of spite and spitfire.

Just ask Madam Toh Siew Hong, a 64-year-old housewife and grandmother, who bore the brunt of Ng's rage for what must have seemed like an interminable 18 minutes in 2013.

Or the pregnant woman Ng kicked in the tummy. Or her daughter's sister-in-law whom Ng threatened with a chopper. Even police officers investigating her bouts of violence were not spared her fury.

Ng, 43, who is also known as Asha Verma, pleaded guilty in court yesterday to four counts of voluntarily causing hurt and three counts of voluntarily causing hurt to public servants.

She also admitted to one count each of using criminal force on a public servant, performing a rash act, behaving in a disorderly manner and criminal intimidation. Fourteen other charges for similar offences will be taken into consideration during sentencing.

Ng has been in and out of jail since 2000 for similar offences. (See report )

She was last sent to jail for four weeks on June 1, 2012, after using abusive language on a public servant.

About a year after her release, Ng attacked Madam Toh.

According to a previous report in The New Paper, two weeks before the assault, Madam Toh's family installed a CCTV camera outside their flat on the 12th storey of Block 10, Chai Chee Road, as they felt threatened by Ng.

The camera captured Ng's brutal assault of Madam Toh on Sept 28, 2013. Yesterday, when the footage was played in court, a hush fell over the courtroom.

Madam Toh is seen coming out of the lift at around 10am. Ng, who lives opposite the elderly woman, suddenly marches forward and pushes her.

Court papers did not mention the reason behind the attack.

Madam Toh, who had just returned from shopping, retaliates by hitting Ng on the nose.

CCTV footage showing Ng's attack on Madam Toh on Sept 28, 2013. PHOTO: LIANHE WANBAOREADER

This only infuriates Ng, who grabs the frail grandmother by the neck and chokes her.

She then punches and slaps her before pulling her hair and forcing her to kneel on the floor. Ng continues to hit Madam Toh's face until she falls over.

CCTV footage showing Ng's attack on Madam Toh on Sept 28, 2013. PHOTO: LIANHE WANBAOREADER

She then stamps on Madam Toh's head at least 10 times before returning to her flat, leaving her battered victim lying on the floor.

About 30 seconds later, Ng emerges and stamps on Madam Toh's face again.

CCTV footage showing Ng's attack on Madam Toh on Sept 28, 2013. PHOTO: LIANHE WANBAOREADER

She pulls Madam Toh by the hair, then picks up an unknown object and flings it at her.

She also throws a metal chair at Madam Toh.

Deputy Public Prosecutor Sheryl Janet George told the court: "The victim crawled away from the accused, back to the lift lobby, before lying down on the ground in exhaustion."

The footage shows Madam Toh later getting up and trying to gather her belongings that are strewn all over the corridor.

But Ng is not done yet. She marches out of her flat, grabs Madam Toh by the hair and flings her to the floor.

When Madam Toh tries to sit up, Ng hits her head, causing her to fall over. As the victim lies on the floor, Ng hits her head, stamps on it and kicks her face.

Ng continues kicking and hitting her multiple times before walking back to her flat.

But after a few steps, she picks up an aluminium incense burner at the lift lobby and hits Madam Toh with it.

After Ng stops, Madam Toh manages to get up. But as she walks away, Ng approaches her again and slaps her face several times. She then grabs her hair, throws her to the ground and scolds her.

The assault stops only when Ng's son-in-law, then 19, steps out of a lift carrying his one-year-old son.

Ng takes the boy from him, and while carrying him, kicks Madam Toh in the face, causing her to fall again. Ng then goes home with her family members.

A dazed Madam Toh struggles home.

The police were notified and officers arrested Ng at her flat later that day.

Paramedics took Madam Toh to Changi General Hospital, and she was later transferred to the Singapore General Hospital.

She was hospitalised for 10 days. A medical report said she had multiple facial bruises, dental trauma and post-traumatic stress disorder.

DPP George urged District Judge Mathew Joseph to call for a report to assess Ng's suitability for corrective training (CT).

CT is a prison regime for repeat offenders. It can last five to 14 years, and does not offer the usual one-third remission for good behaviour.

Stressing that Ng's attack on Madam Toh was "vicious and uncalled for", DPP George added that she was a recalcitrant offender who showed little respect for authority figures.

She also said that members of the public need to be protected from Ng.

Ng's lawyer, Mr Foo Juyuan asked Judge Joseph to not call for a CT report, and instead sentence his client to 5½ years' jail.

A report by Dr Jaydip Sarkar from the Institute of Mental Health said Ng suffers from severe personality disorder, "which consists of antisocial, borderline and obsessive-compulsive personality disorder".

Dr Sarkar also felt she has strong traits of narcissistic personality disorder, the court heard.

Judge Joseph called for a CT report, and Ng will be back in court on Aug 2.

For each count of voluntarily causing hurt, she can be jailed up to two years and fined up to $5,000.

For each count of voluntarily causing hurt to a public servant, she can be jailed up to seven years and fined.

The victim crawled away from the accused, back to the lift lobby, before laying down on the ground in exhaustion.

- Deputy Public Prosecutor Sheryl Janet George, describing Ng's attack on Madam Toh