Lautenberg calls Menendez ethics accusations 'too bad'

“Sen. Menendez has traveled on Dr. Melgen’s plane on three occasions, all of which have been paid for and reported appropriately,” Menendez's office said in a statement.

The Daily Caller has also reported that Menendez solicited prostitutes during the trips, although Menendez has vehemently denied that charge.

“Any allegations of engaging with prostitutes are manufactured by a politically motivated right-wing blog and are false," Menendez's office said.

"There a lot that’s said and covered, but I for one know Bob as a very capable United States senator, and I’m sorry to see him in this position," Lautenberg said. "But I can’t give you anything more. Don’t want to. Don’t know to."

White House press secretary Jay Carney also declined to comment when asked about the reports on Thursday.