Reality Tv star Mike 'the Situation' Sorrentino is facing a federal investigation into his finances.

The probe centres on the former Jersey Shore castmember's three businesses - MPS Entertainment, Situation Productions and his clothing line, Situation Nation.

Sorrentino's publicist confirmed the investigation in a statement, which reads: "Michael Sorrentino is fully aware that the U.S. Attorney's office has issued subpoenas for records relating to several businesses he owns.

"Although the nature and the scope of the investigation is not clear at this time, Sorrentino fully expects that when all the facts are revealed, no further action will be taken."

Sorrentino rose to fame during the six seasons of the hit MTv reality series, and last year (12), came in fourth place on the U.K.'s Celebrity Big Brother.