The Bolivian government says its deputy interior minister has been kidnapped and killed by striking miners.
Rodolfo Illanes and his bodyguard were seized earlier on Thursday at a roadblock in Panduro, south of La Paz, official said.
Interior Minister Carlos Romero said "all indications" were that Mr Illanes had been murdered in a "cowardly and brutal" attack.
Two miners also died from gunshot wounds during clashes with police.
Mr Illanes was beaten to death at about 18:00 local time (00:00 GMT), La Razon newspaper quoted Defence Minister Reymi Ferreira as saying.
The authorities could not for the moment retrieve his body, the minister said. More than 100 arrests had been made, he said.
