An Australian man is being detained by Bali police after marijuana mixed with tobacco and the sedative medication Diazepam was allegedly found in his suitcase at Bali's international airport.
Joshua James Baker claimed the plastic bag containing the mixture had been given to him by his girlfriend and did not belong to him, a customs official told Fairfax Media.
Mr Baker was intercepted at Bali's Ngurah Rai Airport after flying into Bali on a Lion flight from Bangkok at noon on Sunday.
"Based on his travelling profile we put him on our watch," customs head Budi Harjanto told Fairfax Media.
"We watched him go through X-rays and when he headed towards the green desk, we checked him.
"Inside his suitcase we found a suspected 38 grams of marijuana mixed with tobacco and 36 pills of Diazepam."
Diazepam, a medication first marketed as Valium, produces a calming effect and is used to treat anxiety disorders.
"When we interviewed him, he said that he was given the plastic bag containing suspected marijuana and tobacco by his girlfriend, that it wasn't his," Mr Budi said.
He said the amount of narcotics intercepted at customs had come down recently.
"It's a good sign, that our tight security is resulting in deterrent effect. That's why lately we have mostly caught small players or drugs for individual use."
In November last year, Australian teenager Jamie Murphy was released after Bali's police chief confirmed the white powder discovered on him was a mix of painkillers, cough medicine and caffeine and not an illicit drug.