Indonesia is sending hundreds more troops to its remote Papua province after the death of a fifth security official in violent protests.

Police say that a policeman died earlier Wednesday, from injuries sustained during last week's clash with protesters demanding the closure of a U.S. company's gold mine.

Three other police officers and a soldier were killed last week when a demonstration outside a university turned violent in the provincial capital of Jayapura. Officials say riot police used tear gas to try to disperse more than 100 demonstrators, many of whom were throwing stones.

Authorities say at least 200 more security officials have been deployed to the area to prevent further unrest.

Demonstrations began last month at Freeport-McMoRan Copper and Gold, with protesters demanding the right to search for minerals in waste rock left behind by the main mining operation.

Freeport's Papua operation has also been controversial for its effect on the environment and the company's practice of paying Indonesian soldiers to provide security.

Some information for this report was provided by AFP, AP and Reuters.