Mexican authorities say they are working to identify five other bodies after 10 workers were kidnapped last month.

Five of 10 employees who were abducted from a Canadian-run mine in Mexico last month have been confirmed as dead, authorities said.

Mexico’s Attorney General’s Office said on Monday that authorities have identified five bodies found at a property in El Verde, a rural locality in the state of Sinaloa, and are working to identify the remains of five other people.

“It is important to note that prosecutorial authorities have remained in contact with the victims’ relatives,” the office said in a statement.

“In the cases where the bodies have already been identified, they will be transferred to the states of Zacatecas in two cases, as well as to Chihuahua, Sonora, and Guerrero,” it added.

Authorities, who last week arrested four people in connection with the case, will continue gathering evidence to ensure the killings “do not go unpunished”, the office said without providing information on a possible motive.

Vizsla Silver, the operator of the Panuco gold and silver mine located near Mazatlan, Sinaloa, said earlier on Monday that it had been informed by a number of families that their loved ones had been found dead.

“We are devastated by this outcome and the tragic loss of life. Our deepest condolences are with our colleagues’ families, friends and co-workers, and the entire community of Concordia,” Michael Konnert, president and CEO of Vizsla Silver, said in a statement.

“Our focus remains on the safe recovery of those who remain missing and on supporting all affected families and our people during this incredibly difficult time,” Konnert said.

Vizsla Silver, based in Vancouver, reported on January 28 that 10 of its workers had been taken from its project site and that it had informed authorities.

Sinaloa has been rocked by escalating gang violence linked to a rivalry between factions affiliated with two cofounders of the Sinaloa Cartel, Ismael “El Mayo” Zambada and Joaquin “El Chapo” Guzman, both of whom are in custody in the United States.

The western state in Mexico saw more than 1,680 homicides in 2025, making it the most violent year in more than a decade, according to a tally by the Mexican newspaper Milenio.