The bodies of 19 people were found at two different locations in northern Mexico, with 11 of the victims apparently murdered about two years ago, state prosecutors said.
The bodies of eight men were discovered Saturday on the highway that links the city of Delicias to the town of Satevo, a Chihuahua Attorney General's Office spokesman told Efe.
"Eight bodies of men (ages) 30 to 35, all of them shot and partially clothed," were found on the road, AG's office spokesman Carlos Gonzalez said.
The victims have not been identified and investigators have no leads on the perpetrators, Gonzalez said.
Investigators, meanwhile, found the remains of 11 men who were apparently shot dead about two years ago and buried in a remote area, the AG's office said.
The bones and clothing were found in three different clandestine graves, the AG's office said.
Chihuahua has been one of the states most affected by the wave of drug-related violence in Mexico.
More than 11,000 people have been murdered in Ciudad Juarez, located across the border from El Paso, Texas, since 2008.
About 50,000 people have died in drug-related violence in Mexico in the past six years, the majority of them in shootouts involving members of rival drug cartels. EFE