The extraordinary allegations, which involve an array of colourful characters, gold bullion and the engagement of a standover man who duped his employers, have come to light during Mr Lazar's abandoned bail application at Sydney's Central Local Court on Friday.

Mr Lazar, 43, was recently arrested for allegedly defrauding an 88-year-old woman of her house. On Friday, he was charged with dealing with the proceeds of crime in relation to the  woman's house. The mortgage broker was also hit with two charges relating to an attempt to nobble a police investigation.

The police fact sheet, which was presented to court, reads like a black comedy.  It all started to go awry for Mr Lazar when the police pulled over a flashy black BMW heading down Trafalgar Street, Annandale, at 9 o'clock on a winter's night in 2012.

The driver was a suspected drug dealer who had links to outlaw bikie gangs. In the front seat was the wife of a prominent mobster and in the back was Arlo Selby.

Three months later Mr Selby was grilled at the Independent Commission Against Corruption about Moses Obeid's desperate attempt to organise finance for the Obeid family's corrupt coal deal.

But, on that night in August, it was gold rather than coal that caught the eye of police. Inside a black bag next to Mr Selby on the back seat of the BMW was a one kilo block of solid gold, valued at $49,000.

Mr Selby, a financier of dubious repute, claimed the gold bar belonged to Mr Lazar, and that he was entitled to 10 per cent of the proceeds once he had sold it for Mr Lazar.

Police seized the gold bar, and Detective Senior Constable Dave Roberts of Balmain police began to investigate.

What Detective Roberts did not know was that Mr Lazar was already the target of a fraud and cybercrime investigation known as Strike Force McMaster, said the police in their fact sheet.

The fraud squad, which was  tapping Mr Lazar's phone, listened as his friend "Big Al" Constantinidis and Mr Lazar discussed the problem of the gold bar and Detective Roberts' investigation.

Mr Lazar and Mr Constantinidis, who had a bitter falling out with former prime minister Paul Keating over the pair's dealings in a piggery, are alleged in the fact sheet to have engaged the services of Helal Safi, a standover man of gargantuan size, to influence Detective Roberts to cease his investigation into the gold bar.

Mr Safi, who recently gave a statement to police, said that Mr Lazar wanted the detective to be pulled off the case or assaulted. Told it would cost $100,000, Mr Lazar gave Mr Safi a down-payment of $55,000.

Mr Safi took the money but, instead of completing the task, rang Mr Lazar pretending to be a corrupt police officer called Detective Sergeant Machiatto.

In this call, Mr Safi (pretending to be the fictitious Detective Machiatto) told Mr Lazar that Detective Roberts "had been ordered to back down".

In a bizarre coincidence, Detective Roberts did stop bugging Mr Lazar about the gold bar because of the request by the fraud squad to hang back until its  investigation was completed.

Mr Lazar wrongly thought Mr Safi's standover techniques were responsible for Detective Roberts backing off.

According to the fact sheet, Mr Lazar was thrilled with the disappearance of Detective Roberts. He told Mr Safi, "They've even moved the guy from his position … between you and my father, we are untouchable."

Mr Safi told police he "went on with it like I knew what was going on and then said, 'Where is the rest of my money?'." Mr Lazar gave him another $49,000 in cash.

The new charges against Mr Lazar allege that between  August 8, 2012, and September 30, 2012,  he conspired with Mr Safi to assault and intimidate Detective Roberts.

He was also charged with conspiring with Mr Safi to try to influence a police officer in the exercise of his functions.

During the brief court hearing on Friday, police also indicated further charges may be laid against Mr Lazar when the matter returns to court on  December 18.