New Jersey Senator Bob Menendez on Wednesday denied allegations that he hired prostitutes during trips to the Dominican Republic, which were paid for by a campaign donor and doctor currently investigated for Medicaid fraud, according to The Christian Post.

The New Jersey democrat said he did not spend any time with prostitutes while traveling with campaign donor Dr. Salomon Melgen. The FBI launched an investigation into their connection in 2012 after officials received a tip that the doctor flew Menendez out to the Caribbean country and both men hired underage prostitutes.

The news report cited a source that said earlier in January, Menendez sent a $58,000 check to Melgen's office to refund him for the cost of the flights they took together to the Dominican Republic.

Menendez's office issued a statement Wednesday denying the prostitution claims. The statement confirmed that the politician flew on Melgen's plane on three separate occasions, but clarified that the trips "were paid for and reported appropriately."

"Dr. Melgen has been a friend and political supporter of Senator Menendez for many years," Mendendez's office said. "Any allegations of engaging with prostitutes are manufactured by a politically-motivated right-wing blog and are false."

The FBI raided Melgen's office Tuesday and Wednesday in regards to a separate investigation in which he faces potential Medicaid fraud charges. The Post noted that financial documents found in the search might be used to connect Menendez and Melgen, and the prostitution claims.

Melgen, a top contributor to Menendez's federal campaigns, has an outstanding IRS lien of $11.1 million for taxes owed between 2006 and 2009, based on records obtained from the Palm Beack County recorder's office, The Miami Herald reported.

Menendez was sworn in to the Senate on January of 2006 and appointed by New Jersey Governor Jon Corzine to fill the remainder of his term. He currently serves on the Senate Committees on Finance; Banking, Housing and Urban Affairs; and Foreign Relations.