BOGOTA – Police say two bombs being carried by donkeys exploded in northeastern Colombia, killing two coca-eradication workers and wounding six soldiers.

Police Gen. Orlando Pineda says the workers were heading from one field to another to destroy coca plants when the explosives tied to the two donkeys went off.

Officials attributed Friday's attack to the leftist Revolutionary Armed Forces of Colombia. They did not provide evidence to support the claim, but the rebels in the past have staged attacks on workers eradicating coca, the main ingredient of cocaine. The civilian workers were being protected by soldiers.

The blasts took place in the La Gabarra region in Norte de Santander state, northeast of Bogota.