Border Patrol’s internal watchdog is investigating two top agency officials who partied with a wealthy Mexican tequila maker, three sources familiar with the probe said. The sources said the relationship between the officials, identified as Border Patrol chief Jason Owens and Rio Grande Valley Border Patrol sector chief Gloria Chavez, and Francisco Javier González, the grandson of the founder of Don Julio tequila, raises questions about whether Owens and Chavez disclosed their contact with a foreign national and whether they accepted anything that could be in violation of ethical rules.

González was interested in making a Border Patrol-themed tequila to celebrate the agency’s 100th anniversary, but the project has been shelved, sources said.