Authorities and residents in Matamoros remain in high alert after a gunfight broke out on the city TMs southwest side.
Matamoros residents took to social media sites like Twitter to report a shootout and blockades at the Sendero Nacional.
The shootout broke out at about noon and lasted for several minutes, according to witnesses.
Several Twitter users posted pictures showing white school buses blocking several roads, including the heavily transited Avenida Las Brisas.
The local office for Mexican Army refused to confirm the shootout, and release any details over the phone.
There are no reports of any injuries or damage at this time.