Posted: Friday, May 25, 2012 --- 8:00p.m.

MILWAUKEE (AP) -- A teen is sentenced to 25 years in prison for his role in a robbery that left a pregnant woman dying on a Milwaukee street.

Eighteen-year-old Jimmy Scales of Cudahy was driving the getaway van when two other teens robbed 34-year-old Sharon Staples on Aug. 7. Staples, who was pregnant, was shot in front of her 13-year-old son after she wouldn't give up her purse.

The Milwaukee Journal-Sentinel reports (http://bit.ly/LNNVty) Scales was on parole for a similar role in a 2008 homicide at the time. He pleaded guilty in January to felony murder.

Circuit Judge David Borowski called Scales a "menace to society."

Scales made a short apology to Staples' family and his own in court Friday.

His co-defendants have also pleaded guilty and will be sentenced June 29.

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Information from: Milwaukee Journal Sentinel, http://www.jsonline.com

Copyright 2012. The Associated Press.