AAP - A CONVICTED Papua New Guinean bank robber has denied any involvement in violent crimes the country's most notorious criminal says he helped orchestrate.

Alphonse Sailas, 35, known as ‘Alfie’, rejected as "complete rubbish" numerous allegations made by William Kapris, who faces court over charges relating to jail escapes, hostage taking and bank robberies.

Sailas was fingered as the country's top underworld boss in a videotape confession to police by Kapris.

The tape shows Kapris alleging that a network of government ministers, Chinese mafia and Sailas had funded and plotted the numerous crimes for which Kapris now faces charges in court.

When it was leaked, the hour-long tape caused a furore in PNG. It was discussed in parliament, uploaded on YouTube and sold on CDs at local markets in Port Moresby.

Sailas said the infamous tape was fantasy, fabrication and falsehoods. "Kapris is looking for ways to get leniency from the court, saying he is a pawn," he said. "Kapris is the mastermind of the crimes he's in jail for. He is lying about me and the ministers helping him".

PNG police confirmed they found no evidence to arrest Sailas after raiding his house last week when acting on the allegations.

"Kapris is like a crocodile," Sailas said. "You can look after the crocodile for 40 years then one day it will turn around and harm you. He's like that, he can't resist, he's very cunning."

Sailas was sentenced to ten years in Bomana jail for an armed robbery in the 1990s. Since then he says he's lived a clean life, although he was highlighted as a potential risk in a 2008 Bank of South Pacific security report.

The report, obtained last month by AAP, raised concerns Sailas and Kapris were working together with BSP staff. Kapris has been charged for robbing four BSP branches across PNG.

"We come from the same area in East Sepik but we are enemies," Sailas said. "The BSP robberies, I am not party to that, I have no idea, I only heard about it in the newspapers."

A PNG government source told AAP the Kapris tape was part of an elaborate smear campaign fuelled by the Opposition party, police and correctional service officers.

"It's total fabrication," he said. "It's a weak attempt by Kapris to blame the named ministers and to gain leniency."

PNG's Attorney-General, Allan Marat, who resigned on Tuesday, was criticised for visiting Kapris after the tape's release and PNG Police Commissioner Gari Baki launched an investigation into the leak.