Indigenous people armed with little more than sticks corralled seven Farc guerrillas and brought them to justice for the killing of two tribe members in Colombia.

An assembly of Nasa Indians convened on their self-governed reservation in the south-western province of Cauca to decide on the guerrillas' fate.

Guerrillas killed two tribe members for removing banners commemorating the death of Farc leader Alfonso Cano, who was slain during a military assault.

As word of the killings spread, some 300 tribesman pursued the suspected killers. "They were surrounded and forced to surrender," said Gabriel Padi, a senior member of the indigenous council in Cauca.

An assembly of more than 3,000 indigenous people convicted the guerrillas, with sentences ranging from 40 to 60 years in prison.

Two minors were given 20 lashes in public and sent to juvenile detention.

Human rights groups say 40 members of indigenous tribes have been killed during 2014 in Colombia, many at the hands of guerrillas.