NEW YORK: US investigators say 10 or more people associated with imprisoned swindler Bernard Madoff could face criminal charges in the coming months, a law enforcement source said on Tuesday.

The source, who asked not be identified because of the continuing investigation into the multibillion-dollar Madoff fraud, said the FBI was "closer to the beginning than the end" of the probe.

Disgraced financier Madoff, 71, was handed a 150-year prison sentence Monday.