SCHAPELLE Corby's half-brother has been directly linked by Queensland police to the drug run into Bali that led to her 20-year jail sentence.

Senior Queensland detectives made the allegations against James Sioeli Kisina, 18, in court documents after he was arrested for allegedly leading a home invasion on Tuesday night in Brisbane's south.

"He (Mr Kisina) is suspected of some involvement in the exportation of cannabis for which his sister has received a 20-year imprisonment sentence," the affidavit says, sworn by arresting officer Detective Sergeant Dean Godfrey.

Corby's lawyers will now ask for details of Mr Kisina's case in an effort to launch an unprecedented appeal.

Corby's youngest sibling, Mr Kisina was just 16 and with his sister when she was caught at Bali's Ngurah Rai airport in October 2004 carrying 4.1kg of cannabis in a bodyboard bag.

Mr Kisina carried the bag to the Customs desk, but when asked by officials if it was his, Corby interrupted and claimed ownership.

After the drugs were discovered, Mr Kisina was interrogated by Balinese police, but released after they found no proof he was implicated in the crime.

A Queensland police spokeswoman last night said she could not elaborate on the affidavit as "it would be inappropriate at this point to comment on matters that are currently before the court". "The evidence and circumstances surrounding the arrest of Mr Kisina will be presented in court," she said.

Mr Kisina's lawyer, Stefan Simms, yesterday said the drug smuggling allegations had "no foundation".

He said Mr Kisina claims he went to the house in an effort to obtain evidence from drug dealers that might clear Corby.

On Thursday, the Supreme Court in Jakarta - Indonesia's highest court - confirmed it had reinstated Corby's original 20-year jail term after a final appeal against her conviction and sentence. The ruling, made on January 12, overturned a successful appeal to Bali's High Court last year that cut Corby's jail sentence to 15 years.

Corby's parents, Michael Corby and a tearful Rosleigh Rose, yesterday visited their daughter in Bali's Kerobokan prison.

Mrs Rose said her son's arrest was not linked to Corby's arrest and subsequent conviction in Bali. "This had nothing to do with James or what he has done," she told Channel Nine's A Current Affair. "I love James very much ... I'll deal with James when I get home."

But Corby's Bali lawyer Erwin Siregar, who also visited the prison, said he would fly to Australia within weeks to interview Mr Kisina ahead of an "extraordinary appeal" for a judicial review of the now-closed case. Mr Siregar said the renewed legal bid would be based on "new evidence", but refused to give details.

"She has asked me to make another effort, so we will apply for a judicial review. We have new evidence," he said.

Mr Kisina was arrested on Wednesday with two other men, including his cousin, Shane John Tilyard, 19. At a brief hearing on Thursday, Mr Simms said his client claimed he had carried out the home invasion in the belief the occupants were known drug dealers who had information that could help his sister's bid for freedom. "He thought that if he approached people who (he alleged) had connections to drugs he could in some way obtain information which might assist with his sister's case," Mr Simms said outside court. "I can only say it was misguided."

Police allege Mr Kisina and his two co-accused, wearing balaclavas, broke into the home at 4am on Tuesday, tied up the occupants, a couple in their early twenties, gagged the woman and hit the man with an iron bar. They allegedly stole $1000 and a quantity of marijuana, which they took to Mrs Rose's house, where Mr Kisina also lived.

Sources told The Australian that police had filmed their entry and exit to the home, which they had under surveillance because of suspicions of illegal activity.

In the affidavit, police allege that "he (Mr Kisina) admits to smoking cannabis".

Mr Simms said yesterday his client intended to contest the eight charges he is facing.