The widening investigation into Bernard Madoff’s $65bn ‘’Ponzi’’ scheme is focusing on at least 10 other individuals and more criminal charges are likely, according to an official briefed on the situation.

‘’We anticipate that it will be a long investigation and it could be months or more before we are done with this,’’ this person said. ‘’The expectation is that there will ultimately be at least 10 additional people who will likely be charged.’’