Disturbances broke out Thursday on the streets of Quito, the capital of Ecuador, as national police protested the government's cancellation of bonuses and promotions, images on the official Ecuador TV showed.
The broadcast showed mobs on the streets and clouds of black smoke coming from burning tires.
Rank-and-file police took over their headquarters, Ecuador TV said.
"We work 14 hours a day," a uniformed officer said. "We are the ones who never protest."
Said another: "One hour without police. Let's see what happens."