Another QuikTrip on West Florissant Avenue was looted and then set on fire on Aug. 10, one day after Ferguson Police Officer Darren Wilson shot and killed Michael Brown at the nearby Canfield Green Apartments.

Meanwhile, Best Buy closed its Brentwood location Monday afternoon as a precaution. A store clerk said other stores were also closing but the retailer later said that only one store was closed early.

Asked if other stores will close on Tuesday, Best Buy spokesman Jeff Shelman said: "We will just wait and see how things happen in the course of the night."

Among other businesses closing up early Monday:

• Barry-Wehmiller Companies spokeswoman Mary Rudder said the company has not officially closed the Clayton headquarters but "most everybody" went home early Monday. The building is on lockdown, but employees can still come to work at the office if they feel comfortable doing so.

• Centene Plaza, a major office building in downtown Clayton, closed early Monday and will be closed all day Tuesday, according to an email sent to tenants by property manager Rafco Properties Inc.