The security forces in Colombia say at least nine people have died in clashes between two left-wing rebel groups.
he police commander of Arauca province, William Guevara, said the nine belonged to the National Liberation Army (ELN).
He said they were killed by members of Colombia's main rebel group, the Farc, as part of a dispute over control of an important drug route to Venezuela.
Last year, the groups announced they would unite to fight the country's security forces.
The announcement in December, saying that they were on their "way towards working for unity" surprised analysts, who pointed to the deep ideological differences between them.
