A second former female staffer for Representative Tony Gonzales has accused the Texas Republican of sending her sexually explicit text messages, according to reports by the San Antonio Express-News and NBC News.

The allegations come after Gonzales previously admitted to having an affair with a different aide earlier this year. The congressman ended his re-election bid in March following the initial scandal.

The San Antonio Express-News first reported the new allegations on Monday, with NBC News subsequently confirming the report. The latest accusations involve a different former female staffer than the one with whom Gonzales acknowledged having an affair.

The developments present challenges for House Republican leadership as they navigate another ethics controversy involving one of their members. Gonzales represents Texas's 23rd congressional district, which includes parts of San Antonio and stretches along the U.S.-Mexico border.

Gonzales has not publicly responded to the latest allegations. The congressman's office has not issued a statement regarding the new claims of inappropriate text messages with the second former staffer.