Perth teen Jamie Murphy arrives home after Bali nightmare

Australian teenager Jamie Murphy's nightmare in Bali, where he was locked up for two nights and faced years of jail time, is over after he landed home in Perth.

Airport staff whisked the 18-year-old and his parents Brendan and Anna Murphy through a private exit to a waiting van to avoid the media.

Murphy achieved national infamy this week when news broke of his arrest early on Tuesday outside Kuta nightclub Sky Garden for carrying a bag of white powder.

Film emerged of him being physically roughed up by a security guard who appeared to be choking him and squashing his face, as a distressed Murphy pleaded "it's not mine ... what are you doing?"

Jamie Murphy arrives at Denpasar Airport with his parents. Source: AAP
Jamie Murphy arrives at Denpasar Airport with his parents. Source: AAP
A more relaxed looking Murphy. Source: AAP
A more relaxed looking Murphy. Source: AAP

Australian media captured his arrest because they were in Bali to cover large numbers of schoolies celebrating finishing high school.

Murphy finished school last year but arrived in Bali on Sunday night with two friends celebrating graduation.

Australian Foreign Minister Julie Bishop responded by urging young Australians not to break local laws overseas.

Police said they suspected the 1.6 grams of white powder he was caught with was heroin or cocaine - an offence that carries with it a maximum of 12 years in prison.

But by Wednesday afternoon, they said the test results of both the powder and the teenager's urine had come back negative and he was released from Kuta police station that night.

Kuta police chief Wayan Sumara told reporters the powder turned out to be a mixture of painkillers, caffeine, cold and flu medication and cough medication.

Describing Murphy as "very lucky", he said the teen had bought it off a man on the street who told him it would "make him feel good".

Murphy was freed from a Bali cell. Source: AAP
Murphy was freed from a Bali cell. Source: AAP
The white powder allegedly found on Murphy. Source: 7 News
The white powder allegedly found on Murphy. Source: 7 News

He added it was the "first time" the police station had experienced negative results from such a find.

"He wasn't sure at the time [what it was] ... He is a teenager. He wanted to know what it is."

"He then tried it in the room, he drank, mixed it together."

This made Mr Murphy feel nauseous, the policeman added.

Nevertheless, he then went out to Sky Garden with his friends.

Sky Garden has apologised for the
Sky Garden has apologised for the
Murphy leaving Bali on Thursday. Source: AAP
Murphy leaving Bali on Thursday. Source: AAP
Mr Murphy is not a schoolie as was originally reported, he was allegedly holidaying in Bali with his mates.
Mr Murphy is not a schoolie as was originally reported, he was allegedly holidaying in Bali with his mates.
Footage showed the moment the bouncer allegedly found the powder in the teenager's bum bag. Source: CCTV
Footage showed the moment the bouncer allegedly found the powder in the teenager's bum bag. Source: CCTV

"Someone offered him something, he wanted to try it ... He is just a teenager, he wanted to know what it is," he said.

"He tried it in the room, he drank, mixed it together,"

"This made him feel nauseous."

"I don't want to say whether he is stupid or not."

Sky Garden apologised for the "excessive force" used during his detainment.

They said the security involved in the teenager's detainment has been "reprimanded" and will not be permitted to return to work until completing further training.

Perth teen Jamie Murphy. Source: 7 News
Perth teen Jamie Murphy. Source: 7 News
Murphy is a talented soccer player who lives in Perth. Source: 7 News
Murphy is a talented soccer player who lives in Perth. Source: 7 News