Army troops found 2.2 tonnes of marijuana in a cemetery in Los Villa Nueva, a community in northeastern Mexico, said authorities. Soldiers found the drugs Thursday in the community outside Camargo, a city in Tamaulipas state, the Defense Secretariat said.
Officials did not say whether any arrests were made or which drug cartel the marijuana belonged to.
Tamaulipas has been rocked by a wave of drug-related violence unleashed by gangs battling for control of smuggling routes into the US.
The army is carrying out "Operation Northeast" in Tamaulipas, Nuevo Leon, Coahuila and San Luis Potosi states in an effort to weaken the drug cartels that operate in the region.
The Gulf drug cartel and Los Zetas, a band of army special forces deserters turned hired guns and drug traffickers, are blamed for the violence.