Hundreds of workers from a Cambodian clothing factory which produces apparel for US clothing giant Gap Inc on Wednesday held a violent protest outside the plant as armed riot police raced to the scene.

Several windows were smashed by stones at the Might Spectra Knitting Factory as around 500 workers held a noisy rally over their employer's refusal to hike wages to $38 per dozen sweaters from the current $17 per dozen.

The protest died out when 100 armed police officers arrived at the huge plant on the outskirts of the capital Phnom Penh.

Bosses of the Hong Kong-owned plant later promised to hold further talks with worker representatives in a bid to solve the dispute.

Police said no-one was hurt or arrested during the moademonstration.