BOGOTA - Colombia's armed forces have restarted operations against leftist rebel group National Liberation Army (ELN), Defense Minister Ivan Velasquez said on Monday.

The decision to restart military operations comes after a six-month ceasefire between the two sides ended on Saturday.

The government of President Gustavo Petro, Colombia's first left-wing leader, restarted peace talks with the ELN at the end of 2022 as part of its total peace policy, where it is looking to end the country's six-decade conflict that has left more than 450,000 dead.

"There is no ceasefire," Velasquez told journalists. "This means that offensive operations are back on and that is the order of the commander of the military to all forces, and also of the director of the national police."

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Peace talks froze in recent months and the ELN ended its suspension of kidnappings - which security sources say provide the group with much-needed financing - representing the return of one of the most feared elements of Colombia's conflict.

Negotiations between previous governments and the ELN - considered a terrorist organization by the United States and the European Union - broke down due to the group's radical positions, diffuse chain of command and dissent in its ranks.

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Colombia's government recently opted to end a ceasefire with certain elements within the Estado Mayor Central, a dissident faction of the former Revolutionary Armed Forces of Colombia (FARC) rebels who rejected a 2016 peace deal with the state.

However, officials recently entered into separate talks with the Segunda Marquetalia, another dissident FARC faction that abandoned the peace process and returned to arms.