Authorities are investigating two car bombings south of the border in Ciudad Victoria.
The car bombings took place outside a Renault dealership and a Volkswagen on Wednesday afternoon.
Authorities are not releasing information at this time but Ciudad Victoria residents turn to networks such as Twitter to report what happened.
No injuries were reported but residents reported property damage in the area.
Soldiers blocked off the areas surrounding the dealerships while authorities investigating.
Nobody has publicly taken responsibility for the bombings but Ciudad Victoria and other Tamaulipas cities have been witnesses endless rounds of drug cartel violence over the past two years.
Both the Gulf Cartel and the Zetas are fighting for control of the region.