LA PAZ, Bolivia (AP) — Rival worker groups vying for control of a lucrative state tin mine battled on a central avenue of Bolivia's capital Tuesday, including setting off dynamite explosions that killed one miner dead and injured at least four.

Doctors said one man died from chest and throat injuries, and another man lost an arm. Three others suffered lesser injuries.

The bloodshed occurred when one faction of privately contracted miners threw a small dynamite charge into a crowd of state miners who were protesting on a main road in La Paz.

The two sides have been staging rival protests for months over control of the Colquiri tin mine, which is 100 miles (160 kilometers) south of the capital.

Tuesday's protest saw thousands of independent miners take to the streets, some setting off small dynamite blasts.