"On April 13, 2019, at approximately 2 p.m. CDT, five to six Mexican military personnel questioned two U.S. Army soldiers who were conducting border support operations in an unmarked (Customs and Border Protection) vehicle near the southwest border in the vicinity of Clint, Texas," U.S. Northern Command told CNN in a statement.

"An inquiry by (Customs and Border Patrol) and (the Department of Defense) revealed that the Mexican military members believed that the US Army soldiers were south of the border," the statement added.

The U.S. Army soldiers were reportedly sitting in an unmarked Customs and Border Protection-owned Chevrolet Tahoe just south of the border fence but north of the actual border when they were confronted.