JACKSONVILLE, Florida - August 11, 2010 - A mother who was shot along with her two-year-old son when they were carjacked at a drive-through restaurant in Jacksonville, Florida, has filed a civil rights lawsuit against the police.

The lawsuit alleges that the Jacksonville Sheriff's Office has a "widespread practice" of unjustified shootings, reports the Florida Times-Union.

JoAnn Cooper, along with her daughter, seven-year-old Alexis, and her son, two-year-old Daniel Crichton, were at a Wendy's drive-through when they were carjacked in March.

According to the lawsuit, Jeremiah Mathis, who police say had just robbed a nearby Wachovia branch, jumped into Cooper's car. Cooper managed to knock a gun out of Mathis' hands before police officers opened fire on the car.

Mathis was killed. Cooper was shot in the foot, while two-year-old Daniel was shot by one bullet that hit his arm and chest. He lost parts of his lungs and ribs, according to the lawsuit. When Mathis attempted to get out of the car, officers opened fire a second time. Five police officers are alleged to have fired a total of 42 rounds at the car.