Protesters clashed with riot police in Missouri overnight after police reports released earlier said a black teen was a suspect in the theft of cigars from a store minutes before an officer shot him dead.
Racially charged protests in the Missouri town of Ferguson entered their sixth night since the death of Michael Brown on August 9.
Highway Patrol Captain Ron Johnson said police fired a teargas canister at a crowd near a food and liquor store and broader violence and looting erupted.
There remains little clarity surrounding the moments leading up to Brown's death.
More top news
More than 4,400 community police officers have lost their jobs since 2010, according to Unison
Western and central regions will be prone to thundery, blustery downpours all day
Police charged student Hayley King with malicious tampering of food after she was also filmed spraying glass cleaner in the fridge.