dana: gunman attacked coppers at a grocery store in tennessee killing one person and injuring 12 others before turning the gun on himself. we re live in collierville, tennessee. do we have a motive? the motive uncertain at this point. there were workers who fled the scene here who said they recognized the gunman when he walked in and began shooting. they say he could be a disgruntled employee. someone who worked in the deli area. third party vendor. we should hear more from police in the next couple of hours. the shots were first fired 1:30 p.m. people scrambled to get away and people hiding in the freezers. police were on scene within four minutes. swat team went up and down the aisles. the gunman shot and killed himself. he hit both shoppers and store employees. local police and f.b.i. on the scene here now.