LA PAZ, Bolivia (AP) — Authorities in Bolivia say a third person has been killed in street clashes that have intensified since the country's disputed election nearly three weeks ago.

Limbert Guzman, a 20-year-old student, died late Wednesday in a clinic in the city of Cochabamba following clashes between supporters and foes of President Evo Morales.

Morales expressed his condolences on Twitter.

Bolivia's first indigenous president said Guzman had been a victim of violence promoted by political groups that encourage racial hate.

Opponents challenge an official count that showed Morales winning by a margin big enough to avoid the need for a runoff against a united opposition.

Morales accuses the opposition of trying to stage a coup.