FORT WORTH (CBSDFW.COM) – A man has been sentenced to life in prison for shoplifting and knocking down a Fort Worth store worker who later died.

The Tarrant County District Attorney’s Office says William Kennedy was sentenced Wednesday after being convicted of aggravated robbery.

While fleeing a Walmart after stealing a television last year, the 38-year-old knocked down a worker who hit his head.

Bruce Florence died nine days later in a hospital. The 56-year-old Florence suffered from hepatitis and had been waiting for a liver transplant.

Tarrant County prosecutors told jurors that Kennedy had nine prior convictions, including ones for theft, drugs and burglary.

After the trial, prosecutor Nelda Cacciotti said she hopes all shoplifters get the message that thefts may have long-term consequences.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)