LAKE WORTH, Fla. -

Sheriff's officials say a man whose pickup truck struck and killed a 3-year-old girl who was walking on a sidewalk with a family friend has been arrested 56 times.

The Palm Beach Post reported the Palm Beach County Sheriff's Office is trying to determine whether 56-year-old Steven Barnes was impaired or had a medical issue when he hit Priscila Perez Gaspar on Monday afternoon.

Officials say Barnes' license was permanently revoked in 1996 and he has six arrests for drunk driving.

The child's mother, Eulalia Gaspar questioned why Barnes was driving.

She says her daughter was walking to the store to get groceries when she was killed. She recalls telling the child to hold the friend's hand before they left for the store.