Search is on for Tucson serial armed robber

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The Tucson Police Department is asking for help locating a man suspected of committing at least 14 violent and armed robberies. By courtesy Tucson Police Department The Tucson Police Department is asking for help locating a man suspected of committing at least 14 violent and armed robberies. By courtesy Tucson Police Department
The Tucson Police Department is asking for help locating a man suspected of committing at least 14 violent and armed robberies. By courtesy Tucson Police Department The Tucson Police Department is asking for help locating a man suspected of committing at least 14 violent and armed robberies. By courtesy Tucson Police Department
This is a cropped and zoomed image taken from a security camera of an armed robbery suspect being sought by the Tucson Police Department. By courtesy Tucson Police Department This is a cropped and zoomed image taken from a security camera of an armed robbery suspect being sought by the Tucson Police Department. By courtesy Tucson Police Department

TUCSON, Ariz. (AP) -- Authorities are searching for a man suspected of committing at least 14 violent armed robberies since mid-February at a variety of Tucson-area businesses.

The Tucson Police Department, the Pima County Sheriff's Department and the Marana Police Department are working together on the investigation.

The robberies began Feb. 16 and have included gasoline stations, clothing stores, coffee shops, pizza parlors, juice bars, electronic stores, fast-food Mexican restaurants and video game stores.

Most of the robberies occurred within Tucson city limits.

Authorities say the suspect has been masked during each of the robberies. Police on Wednesday distributed surveillance video showing the man stealing money from a clothing store's cash register.

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