More than 80 people were killed in the country’s northeast over the weekend following the government’s failed attempts to hold peace talks with the National Liberation Army, a Colombian official said.

Colombia has suspended peace talks with the National Liberation Army, or ELN, for second time in less than a year after blaming the rebel group for violence that has been affecting a northeastern region of the country in recent days.

Colombian President Gustavo Petro suspended peace talks with the leftist National Liberation Army (ELN), on Friday, after accusing the group of committing a war crime in the Catatumbo region.