Authorities are searching for a group of men who built several armored vehicles for drug cartel gunmen at a warehouse south of the border in Camargo, Tamaulipas.
Mexico's Ministry of National Defense (SEDENA) reported that the seizures happened on Saturday.
SEDENA officials reported that soldiers on patrol came across the warehouse in the Colonia Prolongacion Gonzalez in Camargo.
Soldiers determined that the warehouse was being used to transform regular work vehicles into armored vehicles to be used by drug cartel gunmen.
The modified armored vehicles included special lighting and special slots for guns and other weapons.
No arrests were made but SEDENA officials reported that four armored vehicles were seized at the scene along with 23 wheelers, four bulldozers and two trailers.
Camargo, which is located across the Rio Grande River from Rio Grande City, Texas, has been a battleground between former allies the Gulf Cartel and the Zetas.
It's not clear to whom the armored vehicles and warehouse belonged to.
Meanwhile, SEDENA officials also reported a deadly shootout took place Saturday in Reynosa were two gunmen were killed.
Authorities reported seizing four assault rifles, ammunition, two grenades and one vehicle in the Reynosa shootout.