POLICE have arrested accused gunman Shawn Adam Newton after more than two weeks on the run.

The 42-year-old was arrested in Mullaloo in Perth’s north on Monday afternoon, after police issued a third public appeal for help to locate him.

“Police have arrested Shawn Newton a short time ago,” a police spokesperson said.

“He was arrested without incident.”

Camera Icon Shawn Newton is taken into custody. Credit: PerthNow, Supplied.

Mr Newton was wanted for questioning in relation to an armed robbery earlier this month.

Police also wanted to speak with Mr Newton in relation to the death of 35-year-old Rebecca Jane Gascoigne, whose body was found in the boot of a car on the Mitchell Freeway on July 15.

There were fears on Monday morning that Mr Newton had altered his appearance by wearing a wig.

Police are investigating whether he is linked to an armed robbery at McDonalds on Marmion Avenue in Duncraig on Sunday night.

Play Video Forensics and detectives were called to the McDonald's. Forensics and detectives were called to the McDonald's.

Mr Newton is currently in custody and on his way to be interviewed at the police headquarters in Northbridge.

His arrest comes less than a week after his brother pleaded for Newton to 'man up' for the sake of his daughter and family.

“Do the right thing, I’m very worried for you and I’d like to see you again. Please, Shawn, for your kid, for your family, for everyone involved, please do the right thing brother,” Newton’s brother said last Wednesday.

Camera Icon Wanted man Shawn Newton. Credit: PerthNow, Supplied.

Punters at The Northshore Tavern where Newton was arrested about 2.30pm say he was enjoying a drink in the beer garden when police arrived.

One man said he had spoken to Newton about his day over a cigarette before realising he was wearing a wig.

He said he was shocked when just a minute or two later police swarmed the car park and arrested Newton.

Billy Brooks was having a smoke in the courtyard when he says Newton sat down beside him with a beer.

“He came out, sat down beside me and rabbited on some rubbish, then I knew it was him,” Mr Brooks said.

“He scratched his head and the wig moved.”

“(The officers) came in, took off his wig and said: ‘Your time’s up, pal’.”

Detectives removed his wig before leading him away to a waiting car in handcuffs, the man said.

Some punters captured the arrest on their phones.