The allegation reignited anger in the town, a St Louis suburb in the state of Missouri, with the 18-year-old student's family accusing police of attempting to demean his character as the investigation into his shooting continues.
Ferguson Police linked Michael Brown to the theft of a USD 49 box of cigars from a convenience store shortly before he was fatally shot by police on August 9.
Police released surveillance footage showing a tall, muscular black man -- in a T-shirt, khaki shorts and sandals, the same outfit Brown was wearing -- grabbing a store clerk by the shirt and shoving him.
Police in some areas fired tear gas and smoke bombs, but mostly stayed at a distance in armored vehicles and riot gear, according to news reports.
In several instances, locals rushed to the stores being raided and convinced the looters to stop stealing and leave, then stayed to prevent the thieves from returning.
"If you're getting conflicting reports, it's because there's chaos here. It's dead in some areas, crazy in others.#Ferguson," wrote BuzzFeed reporter Joel Anderson on Twitter.
The link between Brown and the "strong-arm" theft of a box of Swisher Sweet cigars, about 20 minutes prior to the Saturday shooting, appears in a police incident report that summarized the content of a surveillance video.
"The video reveals Brown enter (sic) the store" with his a friend and engaging in "an apparent struggle confrontation" with a store clerk.
"It is worth mentioning that this incident is related to another incident (in which) Brown was fatally wounded involving an officer of this department," the report added.
"There is nothing based on the facts that have been placed before us that can justify the execution-style murder of their child by this police officer as he held his hands up, which is the universal sign of surrender," the lawyers added.
Ferguson police chief Thomas Jackson identified the officer who shot Brown as Darren Wilson, 28, a white, four-year veteran of the force with no record of ill-discipline.
Rather, he said, Wilson -- in a patrol car -- had stopped Brown "because he was walking down the street, stopping traffic. That was it.
