FERGUSON, Mo. – A Quiktrip store was burned down late Sunday amid unrest in Ferguson.

What was supposed to be a peaceful protest and prayer vigil turned volatile, with stores being looted and vandalized throughout the area, and shots being fired into the air.

A group of protesters marched from the Canfield Green apartment complex, where 18-year-old Michael Brown was shot to death Saturday afternoon by a Ferguson police officer, to the Quiktrip store in the 9400 block of West Florissant.

The protesters smashed glass at the store, looted it, vandalized the walls with graffiti, and set it on fire.

Firefighters were able to extinguish the fire, but as of early Monday morning it was still smoking.

Mike Thornbrough, a spokesperson for Quiktrip, says three stores in north St. Louis County in close proximity to the 9400 W. Florissant location were temporarily closed for a short period of time Sunday night into Monday morning as a precaution.

Thornbrough says the stores are now open for business as usual.

Police say at least 12 businesses in Ferguson were looted overnight.

Ferguson Police Department protest:

Unrest in Ferguson:

Candlelight vigil held for Mike Brown: