Less than two weeks after Sen. Tim Kaine promised data related to sexual harassment claims against U.S. senators would be released to the public, a congressional watchdog said it does not have reliable data and could not release the information.

“We lack information regarding the details of allegations or any evidence that might support or refute such allegations,” the Congressional Office of Compliance (OOC) said in a letter Monday.

Sen. Kaine, (D-Va.) called for the watchdog to disclose how many complaints have been filed against each senator on Capitol Hill over the past 10 years.

RELATED: Kaine: We will release sexual harassment claim data on all Senators

In an interview, Kaine said he was entitled to the information as a U.S. Senator, and would release it to the public.

The OOC, however, did disclose that taxpayer money and Treasury Department funds have been used to settle sexual harassment claims against U.S. Senate offices. A specific dollar amount was not disclosed, even though the OOC provided similar data for the U.S. House of Representatives.

Letter for Senator Kaine from Susan Tsui Grundmann by Anonymous DxtKT4 on Scribd