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A Davenport teen charged earlier this year as an adult in connection with a string of armed robberies in Bettendorf and Davenport was sentenced Wednesday to up to 25 years in prison.

Davionta Isiah Duax, 17, was sentenced to four concurrent sentence of up to 25-years on four counts of first-degree robbery, a Class B felony, in Scott County District Court.

Although he is charged as an adult, the teen is not required to serve a mandatory minimum sentence before he is eligible for parole.

Police say Duax, while armed with a knife, robbed Express Lane, 1909 Harrison St., Davenport, on Jan. 23 and Feb. 6; Ann's Hallmark Shop, 886 Middle Road, Bettendorf, on Feb. 2; and Little Caesars Pizza, 2900 E. 53rd St., Davenport, on Feb. 8.

He was arrested in mid-February.

Less than a year earlier, he was arrested and charged as an adult for armed robberies at Advance America, 1801 E. Kimberly Road, and Gas America, 3205 Brady Street.

In those robberies, Duax was armed with a pellet gun, according to court documents.

The case was remanded to juvenile court, and in June 2016, he was placed into Woodward Academy, a male youth treatment facility.