Baltimore police are reviewing surveillance tapes to identify what appears to be middle-school youngster who mobbed a 7-Eleven store Wednesday afternoon on Light Street near the Inner Harbor.

About 35 to 40 youngsters converged on the store shortly after 1:30 p.m., attracted by a free "Slurpee" promotion, and reportedly stole candy and then became angry with the manager when he confronted him. Police said some youths hit him on the back and arms.

Read story from today's paper describing the attack.

Police released the offense report this morning in which the manager reported that after the kids left, he noticed an envelope containing daily receipts -- $6,600 in cash -- was missing from his pocket. But the police report says it is unclear how or if it was taken, and that surveillance video shows that "nobody [was] observed going [through] the store owner's pockets."

The report concludes: "It is undetermined when and how during .. the incident the deposit enveloope was taken."

Police said they are working with city school system to try an identify the uniforms many of the youngsters were wearing -- khaki pants and yellow shirts. The manager could not be reached this morning.

Wednesday's melee was just a few days after the mayor toured the Inner Harbor and downtown and boosted police presence on the weekends, after a disturbance over St. Patrick's Day in which hundreds of youths fought.

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