Sen. Robert Menendez's office said Wednesday night that he reimbursed a prominent Florida political donor $58,500 for the full cost of two of three trips Menendez took on the donor's plane to the Dominican Republic in 2010.
There was no public disclosure.
"The senator paid for the two trips out of his personal account and no reporting requirements apply," said Menendez spokeswoman Tricia Enright.
Details of Menendez's trips emerged as his office said unsubstantiated allegations that the senator engaged in sex with prostitutes in the Dominican Republic are false.
The FBI searched the West Palm Beach, Fla., office of the donor - eye doctor Salomon Melgen - on Tuesday night and early Wednesday, but it was unclear if the raid was related to Menendez, a New Jersey Democrat.
A third trip by Menendez aboard Melgen's plane - a campaign fund-raising journey to the donor's residence in the Dominican Republic - took place in May 2010. That trip was reported to the Federal Election Commission, said Enright.
Menendez categorized the other two trips as personal. The first was from Aug. 6-9, 2010, a round trip from South Florida to the Dominican Republic. The second personal trip was from Sept. 3-6, 2010, from New Jersey to the Dominican Republic and back.
Menendez could have invoked what is known as a "friendship exemption" regarding the two personal trips, which would have required the senator to report the travel to the Senate Ethics Committee as a gift. Instead, Menendez chose to reimburse the full cost of the two trips.
The Daily Caller, a conservative website, reported shortly before the November election that Menendez traveled on Melgen's private plane to the Dominican Republic to engage in sex with prostitutes.
Menendez's office said that any accusations of engaging with prostitutes "are manufactured by a politically motivated right-wing blog and are false."
At FBI headquarters in Washington, spokesman Jason Pack said the bureau "cannot comment on the existence or status of an investigation." Justice Department spokeswoman Tracy Schmaler also declined to comment.
On Tuesday, Menendez became chairman of the Senate Foreign Relations Committee, succeeding Sen. John Kerry, D-Mass.
Records filed in Palm Beach County show an Internal Revenue Service lien against Melgen of more than $11.1 million for unpaid taxes from 2006 through 2009. Prior liens for taxes from 1998 to 2002 were subsequently withdrawn, records show.
Earlier Wednesday, Menendez's office said Melgen has been a friend and political supporter of the senator for many years and that the three trips that Menendez took have been "paid for and reported appropriately." Menendez's office later changed the statement's wording to specify that the trips had been "paid for or reported appropriately" to correct the impression that all three trips had been publicly reported.
Melgen is involved in numerous businesses, all sharing the same address in West Palm Beach, according to records filed with the Department of State in Florida.
Late Tuesday and early Wednesday, FBI agents were seen inside the West Palm Beach building, walking its halls and standing beside shelves full of files.
The Daily Caller began publishing stories on its website about Menendez and Melgen on Nov. 1, when it reported that two women from the Dominican Republic said Menendez paid them for sex earlier in 2012. Prostitution is legal in the Caribbean nation.
Melgen is listed as having an ownership interest in DRM Med Assist, which Federal Aviation Administration records show is the owner of a CL-600 Challenger plane. Flight records for the aircraft were not immediately available.
Melgen, a registered Democrat, has made $193,350 in political contributions since 1998, including $14,200 to Menendez, according to Federal Election Commission records. Menendez was chairman of the Senate Democratic Campaign Committee, which raises money for Democratic Senate candidates, from 2009-2011.
Menendez, a lawyer, is a former mayor of Union City, N.J., and also served in the New Jersey state General Assembly and the New Jersey state Senate. He is divorced and has two children.
Melgen, 58, is a native of the Dominican Republic, where he earned his medical degree from the Universidad Nacional Pedro Henríquez Ureña in 1978. He has lived in the U.S. since at least 1980, holding an internship, residency and fellowship at hospitals in Connecticut, Missouri and Massachusetts, according to records filed with the Florida Department of Health.
Melgen has been licensed to practice in Florida since 1986 and purchased the West Palm Beach plot of land where he built his main office in 1991. Over the years, Melgen has become regarded as a top ophthalmologist, speaking at conferences and even operating on then-Gov. Lawton Chiles in 1997. The governor later appointed Melgen to a state panel on HMOs.
Calls to Melgen's offices Wednesday were forwarded to an answering service where receptionists told callers to try back Thursday. Calls to Melgen's home in North Palm Beach, which is appraised at $2.1 million, went unanswered.
On the website for his medical practice, Melgen writes: "I am always asked what sets me apart from most other doctors, and I would have to say that I do not consider myself to be a `cookbook' physician. My patients are my number one priority, and when I am looking to treat a diagnosis I try to look at all the data at hand and extrapolate the best treatment instead of solely adhering to what the current `standard' of treatment may be."