"What we can tell you right now is it's an ongoing investigation," said Pennsylvania State Police officer Melinda Bondarenka at a press conference.

Demonstrators took to the streets across the country for another night on to protest Donald Trump's presidential election victory, voicing fears that the real estate mogul's political triumph would deal a blow to civil rights.

Hundreds of protesters in Oakland, California walked the streets and made it onto interstate 580 , bringing traffic to a standstill. Police were on hand to oversee the mostly peaceful and orderly protests.

A protest turned riot against the election of Donald Trump in downtown Portland, Oregon escalated late Thursday when officers began pushing the crowd back, arresting people and using flash bangs and gas to disperse other protesters.

Portland Police on Twitter called the protest an unlawful assembly, saying protesters were throwing objects at police.

After several orders to disperse, police said officers used "less lethal munitions" in order to make arrests and move the crowd.

Around the country from New York to Chicago to California, in red states as well as blue, hundreds of demonstrators marched through streets, many for the third straight night.

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