granite place. reporter: police descend on the scene, telling people outside to take cover. he started screaming and he said, get inside. reporter: kevin doyle telling our stephanie ramos he saw three men running from the building. they were terrified. i ve never seen that look on anybody before. they were very, very upset. reporter: a lone shooter with a handgun. schools placed on lockdown. businesses sheltering in place. three people dead. two others critically wounded. the gunman fleeing the scene. there s an individual out there on the loose who committed, you know, one of the most heinous acts we ve ever seen in our county. certainly we consider him armed and dangerous. reporter: the suspect, identified as 37-year-old radee l. prince, a machine operator at advanced granite solutions. reports surfacing that prince gathered his coworkers to execute them. prince apparently a man with a troubled past. earlier this year, a restraining order was sought against prince, acco