Border Patrol authorities in Sierra Blanca, Texas, discovered 74 migrants Monday, including two suspected smugglers, after inspecting a pair of trailers at an immigration checkpoint.

Law enforcement found several migrants concealed inside a “large travel trailer” after a K-9 alerted them to the contents of the vehicle, officials announced Thursday. Moments later, Border Patrol advised the Texas Department of Public Safety that another truck with similar cargo was in the area.