US state burns after jury’s judgment

• White police officer who shot an unarmed black teenager will not be indicted: jury
• ‘Jury has found no probable cause exists to file a cause of indictment’

Washington: A white police officer who shot an unarmed black teenager would not be indicted, a grand jury has ruled, sparking street violence in US state of Missouri against the decision.

St Louis County Prosecutor Robert McCulloch late last night announced that the jury had found no probable cause exists to file a cause of indictment against police officer Darren Wilson, who killed Michael Brown, 18, in the month of August in a suburb of St Louis, Missouri.

Brown's family expressed profound disappointment over the decision of the grand jury.

Enraged protesters set fire to buildings and cars and looted businesses in Ferguson after the verdict. Protesters assembled in Ferguson to protest against the decision.

They gathered in front of the police station in Ferguson where officer Wilson was based chanting: "These killer cops have got to go." Brown's family asked protestors to be peaceful.

"While we understand that many others share our pain, we ask that you channel your frustration in ways that will make a positive change," the family said in a statement.

"We need to work together to fix the system that allowed this to happen. Join with us in our campaign to ensure that every police officer working the streets in this country wears a body camera. We respectfully ask that you please keep your protests peaceful," the statement said.

US President Barack Obama urged people to maintain calm and not to resort to violence.

"I join Michael (Brown)'s parents in asking anyone who protests this decision to do so peacefully," Obama said. "There is no excuse for violence," he said in a late night appearance before the White House Press Corps.

"I also appeal to the law enforcement officials in Ferguson and the region to show care and restraint in managing peaceful protests that may occur," Obama added.