FERGUSON, Mo. (AP) Missouri's governor says the National Guard will help "in restoring peace and order" to the town of Ferguson, where there've been protests, some violent, since an unarmed black teen was shot and killed by a white police officer.

Gov. Jay Nixon's order to send in the Guard came after Sunday night's violence in which police used tear gas to clear protesters off the streets well ahead of a curfew.

Police say they were responding to vandalism, looting, gunfire and some people tossing Molotov cocktails.

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