Nine News has captured the final moments of a stand-off between a man and TRG officers at Kings Park.

A 50-year-old man has appeared in court charged with three offences after allegedly holding police at bay with a gas bottle and lighter in Kings Park after a dramatic family siege lasting four hours yesterday.

David Charles Batty, 50, faced Perth's Magistrates Court today wearing a yellow t-shirt and tried to cover with his hands what appeared to be a bruise on his lower left cheek and chin.

He has been charged with aggravated assault with intent, deprivation of liberty and attempt to cause an explosion likely to do serious injury to property.

The duty officer representing Batty told Magistrate Stephen Malley that he had made an application for legal aid.

A hospital order was made to assess Batty's mental health at the Franklin Centre before further court proceedings.

Batty will remain in custody until his next court appearance on July 27.

Yesterday, police were called to scene at 1.10pm after Batty allegedly held his father against his will in his 2004 Hyandai Elantra near Frasers Restaurant.

The man allegedly had his father trapped in the car with his hands bound by tape, but his father managed to loosen it and escape the vehicle just before police arrived at 1pm.

The father was shaken from the incident but in good spirits, police said, after the accused had arrived at the park in an agitated state.

A dramatic and sudden end later followed, when Batty suddenly started the car he had been holding out in and drove off, running over a kerb and down a hill about 5.20pm.

The Tactical Response Group's armoured Bearcat vehicle gave chase and witnesses reported hearing several loud cracks before seeing the man's car crash into a garden bed.

Police later confirmed that 'bean bag' rounds were fired, a less than lethal force option used by TRG officers to temporarily disable offenders.

Officers intercepted the vehicle and the man was taken into custody before he was conveyed by ambulance to hospital to treat a facial injury, which was not believed to be serious.

Today, police said he was discharged from hospital at 10pm last night, after treatment to a small cut on his chin and was then interviewed by police.

Police say Batty had allegedly been in possession of a cigarette lighter and a gas bottle, similar to those used with barbecues.

A police spokesman said a negotiator had been attempting to reason with him throughout the incident.