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BERKELEY, MO (KTVI) — The St. Louis County prosecutor’s office has filed charges against a teen believed to be involved in the looting and arson of a Quik Trip convenience store on Christmas Eve. Joshua L. Williams, 19, is charged with 1st degree arson, 2nd degree burglary, and misdemeanor theft.

Joshua L. Williams, 19
Joshua L. Williams, 19

The incident happened early Wednesday morning after a Berkeley police officer shot and killed Antonio Martin, 18, at a Mobil gas station in the 6800 block of North Hanley. Martin had allegedly pointed a gun at the officer.

A large crowd gathered at the Mobil to protest the police shooting. News video from the scene shows several people vandalizing a Quik Trip across the street. One person can be seen spraying liquid and setting things inside and outside the store on fire. Police were able to put out the flames before significant damage was done.

Police also have surveillance video from the Quik Trip.

Court records say that Williams is the man who broke in and started the fires. He is also accused of stealing a lighter, gum, and money from the store.

St. Louis County Police say Williams has confessed to the crimes. He has been arrested.

Williams is has been vocal at Ferguson related protests over the past several months. A small group gathered Saturday outside the St. Louis County Courthouse to show support for Williams.