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Mono Jojoy was the senior military commander in the rebel group
One of the most senior leaders of the Revolutionary Armed Forces of Colombia (Farc) has been killed, say reports.
Jorge Briceno, also known as Mono Jojoy, died in a military airstrike in the Macarena region, known to be a Farc stronghold, local media said.
It comes a few days after another guerrilla leader, Sixto Cabana, was shot dead along with 27 other rebels.
The Marxist Farc rebels have been fighting the Colombian authorities since the mid-1960s.
Jojoy was believed to be leader of the Farc's strongest fighting division, the Eastern Bloc.
The United States had offered a reward of up to $5m (£3.2m) for information leading to his arrest or conviction.
"A military source has confirmed that it defeated a group of rebels during an operation involving the four branches of the military," Colombia's attorney general Guillermo Mendoza said in a radio interview.
He said soldiers had found the body of Jojoy.
Another 20 rebels were also killed in the attack, an official at the defence ministry told the AFP news agency.
The BBC's Jeremy McDermott in Bogota says Jojoy's death will be a major coup for Colombian President Juan Manuel Santos.
It also leaves the Eastern Bloc without a leader, which is likely to seriously affect rebel morale, says our correspondent.
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.
Mono Jojoy was the senior military commander in the rebel group One of the most senior leaders of the Revolutionary Armed Forces of Colombia (Farc) has been killed, say reports.
Jorge Briceno, also known as Mono Jojoy, died in a military airstrike in the Macarena region, known to be a Farc stronghold, local media said.
It comes a few days after another guerrilla leader, Sixto Cabana, was shot dead along with 27 other rebels.
The Marxist Farc rebels have been fighting the Colombian authorities since the mid-1960s.
Jojoy was believed to be leader of the Farc's strongest fighting division, the Eastern Bloc.
The United States had offered a reward of up to $5m (£3.2m) for information leading to his arrest or conviction.
"A military source has confirmed that it defeated a group of rebels during an operation involving the four branches of the military," Colombia's attorney general Guillermo Mendoza said in a radio interview.
He said soldiers had found the body of Jojoy.
Another 20 rebels were also killed in the attack, an official at the defence ministry told the AFP news agency.
The BBC's Jeremy McDermott in Bogota says Jojoy's death will be a major coup for Colombian President Juan Manuel Santos.
It also leaves the Eastern Bloc without a leader, which is likely to seriously affect rebel morale, says our correspondent.
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.