A FORMER Mafia boss who once ordered executions on suspected mob turncoats has made gangland history with his own betrayal, becoming the highest-ranking member of New York’s five Italian organised crime families to testify against one of his own.

A team of FBI agents in New York has begun digging for the remains of a half dozen or more victims of former Gambino crime family boss John Gotti, the so-called “Teflon Don”, who died in prison two years ago.

A FABLED, 20-year-old FBI undercover operation resurfaced to shock the US underworld this week.