Directly across the border from Douglas, Arizona, Mexican authorities seized drugs, ammunition and a bazooka.
The items were found in Agua Prieta, Sonora last week, according to Mexico's Attorney General's Office.
Mexican officials seized 1,800 pounds of marijuana and found nearly 2,000 rounds of ammunition.
The bazooka was attached to a vehicle, which Mexican officials said served to launch drugs to the United States.
Agua Prieta and Douglas are separated by a 18-foot-tall border fence. A catapult was found on the fence east of Douglas earlier this year.
A release from the Mexico's Attorney General's Office did not mention any arrests in connection to the seizure.