CHICAGO (AP) — Two teenagers who allegedly used a BB gun to rob four downtown Chicago businesses have been arrested on federal charges.

The Chicago Sun-Times reports that 18-year-old Brantez Evans and 19-year-old Lamarr Brown are accused of robbing three Subway restaurants and one minimart this month. They were arrested this week minutes after one of Subway robberies.

Each federal robbery charge carries a maximum sentence of 20 years in prison. They were charged federally because their alleged robberies of the Subway restaurants is considered to be obstruction of interstate commerce.

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