Former U.S. Attorney Tom Marino (R) on Wednesday formally announced that he is running for Congress, The Daily Item of Sunbury, Pa., reported. He said he will challenge incumbent Rep. Chris Carney (D) for his seat in Pennsylvania’s 10th congressional district, which includes Scanton.

Marino was the U.S. Attorney for the Middle District of Pennsylvania from 2002 to October 2007.

He made the announcement in Williamsport, recalling the attitude that his parents had instilled in him long ago: “A citizen of this great country had to give back double what he had received.”

Before becoming a federal prosecutor, Marino was a Lycoming County, Pa., district attorney.

According to the Allentown Morning Call, during his time as U.S. Attorney, Marino came under fire for proving a reference for Louis DeNaples on DeNaples’ gaming application for Mount Airy Casino Resort while Marino’s office was investigating DeNaples. After Marino resigned, DeNaples hired Marino as an in-house counsel for non-casino businesses. Marino recently resigned in order to focus on his congressional bid.

Marino will face at least three other Republicans in the primary. The Republicans who have officially announced their candidacy are anti-tax activist Chris Bain, Snyder County Commissioner Malcolm Derk and chiropractor David Madeira.

Two other Republicans who have been mentioned as possible candidates are businessman Dan Meuser and Lackawanna Trail School Board Member Daniel Naylor.