A police officer told an elderly woman with dementia symptoms they were “not playing this game” before he tasered her in dramatic footage played to his criminal trial.

Senior Constable Kristian James Samuel White shot his stun gun at great-grandmother Clare Nowland at the Yallambee Lodge aged-care home in the southern NSW town of Cooma in the early hours of May 17, 2023.

The 95-year-old hit her head on the floor when she fell and had an inoperable bleed on the brain, dying at Cooma Hospital a week later.

White is on trial in the NSW Supreme Court for her manslaughter.

On Tuesday, the jury was shown the incident in footage from the aged-care facility’s CCTV cameras, as well as body-worn cameras from White and his partner.

“We’re not playing this game, Clare, you’re going to put that down,” White was heard saying as the 95-year-old approached them with a knife from inside one of the centre’s treatment rooms.

Jurors heard electrical crackling come from the Taser as White activated it but initially did not fire.

“You keep coming, you’re going to get tased,” he told her.

As Nowland kept walking forward despite the warnings, the 34-year-old was heard saying “nah, bugger it” before discharging his weapon.

The 95-year-old was seen taking the impact and hunching forward before falling backwards onto the floor, where she lay still.

“Got her, grab it, grab it, grab it,” White yelled.

While there is no dispute the 34-year-old discharged his Taser and this led to Mrs Nowland’s death, the officer stands by his actions.

On Monday, defence barrister Troy Edwards SC said his client had a duty to protect others from injury or death and acted against the risk that Ms Nowland posed with the knife.

But crown prosecutor Brett Hatfield SC told jurors the use of force amounted to criminal negligence and a reasonable person could foresee the likelihood of serious injury.

The trial continues.

-AAP