A Canberra man told police he had ''no idea'' how bags of cannabis, ice and cash came to be stashed in concealed drawers in his bedroom, a court has heard.
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But a jury also heard his now-dead mother, a drug user with a conviction for drug supply, was herself later the subject of a police search warrant at their home.
Jeremy Scott Campbell is on trial in the ACT Supreme Court, having pleaded not guilty to trafficking cannabis and methylamphetamine, or ice.
On the morning of July 27, 2009 police armed with a search warrant arrived at the Mawson home he shared with his mother, Helen Patricia Campbell.
The court has heard they found Jeremy Campbell in his pyjamas and holding a dog; his mother was not present.
A subsequent search of one of the home's two bedrooms uncovered bags of crystalline powder, cannabis, digital scales, clip-seal bags, a list of names and numbers, and more than $26,000 in cash.
The substances and cash were found in concealed drawers, and testing later put the total weight of cannabis at more than 400 grams.
The 111 grams of crystalline substance was 11.6 per cent pure methylamphetamine, leaving more than 12 grams of the pure drug.
In a recorded interview with police, read to the jury yesterday, Campbell repeatedly agreed the bedroom where the drugs were found was his.
The now-25-year-old's proof-of-age card was also found on a dresser.
But in the same interview he disavowed all knowledge of the drugs except 15 grams of cannabis that he described as his ''personal smoke''.
''I can't tell you nothing about it, I didn't know it was there,'' Campbell said.
He said he bought the chests of drawers a month earlier.
Prosecutor Amanda Clarke has told the jury the Crown had a ''very strong circumstantial case'' against Campbell.
But the accused man's barrister said they were not his client's drugs and may have belonged to his mother.
The court has also heard a sample of Jeremy's saliva was taken for DNA testing.
The house was raided a second time in February 2010, when police discovered ice in the pocket of a woman's jacket and cannabis in a metal box labelled ''skunk weed''.
They also found $7000 cash.
In the wake of the search Helen Campbell pleaded guilty to charge of selling or supplying drugs and was convicted in the Supreme Court in September 2011.
Less than a month later she died.
The trial before Justice John Burns continues today.
