The 15 black uniforms found in the men's SUV in Tijuana, across the border from San Diego, had arm patches with the logo and the slogan, "Muletas Special Forces."
An army statement issued Friday said the men were pulled over because their car had bullet holes in one side.
Soldiers found 20 guns in the SUV and another vehicle and suspect the men were involved in kidnappings and killings. No charges have yet been filed.
