JACKSONVILLE, Fla. -

Police in Jacksonville are asking for the public's help in finding a 21-year-old man who was last seen Saturday.

Police said Anthony Howell became angry, packed a change of clothes and left his home on in the 3200 block of Hampstead Drive in the Fort Caroline area.

Howell is mentally handicapped and has the mental capacity of a sixth-grader, police said. He was last seen wearing a gray shirt, dark shorts and carrying a Florida Gators backpack.

Howell is described as 5 feet 9 inches tall and 160 pounds, with black hair and blue eyes.

Anyone with any information on his whereabouts is asked to call the Jacksonville Sheriff's Office at 904-630-0500.