Colombian security forces have clashed with indigenous activists who stormed a hill-top military base that they were occupying.

One person was killed and more than 20 others were injured in Wednesday's clashes in the Cauca province, in south-west Colombia, according to local media reports.

Anti-riot police were sent to Cerro Berlin after Nasa tribesmen carrying sticks had driven about 100 soldiers from the army post they were guarding on the mountain.

Early on Wednesday, police used tear gas to remove the indigenous group from Cerro Berlin, some two hours from the town of Toribio.

Indigenous leaders have called on both government troops and the Revolutionary Armed Forces of Colombia (FARC) to abandon the jungle-covered mountains so they can rebuild their lives after years of bloodshed killed dozens from their community.