Colombian police say they may have killed one of the country's top drugs traffickers, Pedro Guerrero Castillo.
Guerrero, known as Cuchillo (The Knife), led a 1,200-strong army and largely controlled the drugs trade in eastern Colombia.
Police had been hunting him for several years and had offered a $1.25m (£800,000) reward for his capture.
He was allegedly injured in a shoot-out with police in the eastern province of Meta and later died of his injuries.
One of his bodyguards died in the gunfight, near the town of Mapiripan, while at least seven others in his group were arrested. Among those detained was his number two, known as Madman Harold, reports say.
Officials said tests were being carried out to confirm whether the body discovered in the jungle was that of Guerrero.
The BBC's Jeremy McDermott in Colombia says Guerrero's Popular Revolutionary Anti-terrorist Army of Colombia controls much of the drugs trade on the country's eastern plains.
The group is thought to be responsible for smuggling hundreds of tonnes of cocaine
out of Colombia, principally through Venezuela.
29 December 2010