A Davenport teenager charged with three armed robberies in Davenport has now been charged in connection with a robbery at a Bettendorf business.

Daviaonta Isiah Duax, 16, is charged with first-degree robbery and fourth-degree theft, a serious misdemeanor, in a robbery that occurred Feb. 2 at Ann’s Hallmark Shop, 886 Middle Road, Bettendorf Police Capt. Keith Kimball said Friday in a news release. 

The robbery charge is a Class B felony punishable by up to 25 years in prison.

According to an arrest affidavit filed in support of the criminal complaint, Duax walked into the store at 6:38 p.m. wearing a black zip-up hooded sweatshirt with the hood pulled up over his head, a red bandanna covering his face and black gloves.

He walked behind the cash register counter and displayed a small knife to the two store employees, according to the affidavit.

Duax demanded money from both registers and told the employees not to give him any change. The employees placed the cash, approximately $375, in a Hallmark bag and handed it to him, according to the affidavit.

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He then fled the store and ran west, according to the affidavit.

Duax already is charged with three counts of first-degree robbery for robberies at Express Lane, 1909 Harrison St., on Jan. 23 and Feb. 6, and Little Caesars pizzeria on Feb. 8.

Police say the teen also was armed with a knife in those robberies.

He is being held on a $75,000 cash or surety bond in all the cases.