The Democrat is now accused of making positive comments about Qatar for gifts.
TRENTON, New Jersey (WPVI) -- Sen. Robert Menendez, D-N.J., faces additional allegations of wrongdoing contained in a superseding indictment returned Tuesday in New York.
Menendez, who has pleaded not guilty to all prior counts, is accused of making positive comments about Qatar in exchange for items of value.
According to the new indictment, the luxury wristwatches Menendez was allegedly offered were valued between $10,000 and $24,000.
"How about one of these," the indictment quoted co-defendant Fred Daibes saying in a message he sent to Menendez along with photos of the watches.
Menendez and Daibes had attended an event in Manhattan hosted by the Qatari government, prosecutors said.
Two days later on Sept. 29, 2021, Daibes sent Menendez a message about a Senate resolution supportive of Qatar as the Qatari Investment Company considered a real estate investment with Daibes.
By March 2022, the Qataris were offering Mendendez's wife, Nadine Menendez, tickets to the Formula One Grand Prix in Florida, prosecutors said, and by 2023 the Qatari Investment Company completed a joint venture with Daibes worth tens of millions of dollars.
The senator has said he will not step down from office and has strongly denounced the charges against him.
ABC News contributed to this report.