Colombia has suspended peace talks with the National Liberation Army, or ELN, after blaming the rebel group for an attack that killed two soldiers and injured more than 20.

Colombia’s government has ended peace talks with the ELN guerrilla group after a deadly attack on a military base, effectively extinguishing the prospects for a deal with the group and leaving it stronger than when the negotiations started.

Colombia's government has called off peace talks with leftist rebel group the National Liberation Army (ELN), its peace delegation said on Wednesday, following an attack which killed two soldiers and injured more than two dozen.

An attack on a military base in eastern Colombia killed two soldiers and injured at least 21, Colombia’s military says, as tensions escalate between Colombia’s government and one of the nation’s largest remaining rebel groups.

An attack with explosives by Colombian leftist rebel group the National Liberation Army (ELN), which left more than two dozen troops injured and two dead, has "practically" ended peace talks, Colombia's President Gustavo Petro said on Tuesday.