14 hours. more than 100 workers were injured in the fire, but the cause is not yet known. in springfield, massachusetts, fire officials say human error caused the massive explosion in the city s entertainment district friday that injured 21 people and destroyed one building. a gas company worker looking for a leak punctured a hole in a gas line. at a walmart east of atlanta, georgia, a man suspected of shoplifting died yesterday. police say the man was in a physical altercation in the parking lot with two walmart associates who have been suspended, and a contract security officer who was let go. a walmart statement said, quote, no amount of merchandise is worth someone s life. this is truly a sad situation. we re in the process of working with law enforcement. next, authorities in florida confirmed that they missed evidence that someone in casey anthony s house did a computer search for the term foolproof suffocation on the day her daughter died. casey anthony was acquitted of