Police keeping mum on any Corby probe

(AAP) The Australian Federal Police (AFP) will not reveal if it is investigating claims the father of convicted drug smuggler Schapelle Corby owned the marijuana that led to her 20-year Bali jail sentence.

Corby's sister Mercedes has called for the AFP to disprove allegations from convicted drug trafficker, Adelaide man Malcolm McCauley, that he supplied the lateMichael Corby with the drugs.

Mr McCauley also told Fairfax newspapers that Corby knew how the drug smugglingoperation worked.

Corby is serving a 20-year jail term in Bali's Kerobokan prison after being convicted in 2005 for smuggling 4.2 kilograms of marijuana in a boogie board baginto Denpasar airport.

He said the plan "broke down on the day" because a series of $1,000 bribes alsoplaced in the bag went missing before the bag went through airport security.

Speaking from Bali on Saturday, Mercedes told AAP she was outraged by Mr McCauley'sclaims and wanted an AFP investigation to clear her father's and her sister's names.

The AFP on Sunday said it would not reveal if it was investigating the explosiveclaims.

"The AFP does not comment on whether or not we are investigating individuals," aspokesman for the AFP told AAP.

Michael Corby died earlier this year from cancer and a week ago Queensland Police said they had "no evidence to link Michael Corby with involvement in the drugtrade".

On Sunday, a spokeswoman for Queensland Police said the matter was not underinvestigation.