just a violent crime. cnn ian lee joining us now. what do we know. >> brianna, in the bast couple of hours, we have been learning a lot about him. starting with the father. the father recognized him from that security footage that was taken from the shooting. he went to his safe. he looked for a gun that he had stored there. he found it missing. he then went and called thor these and said my son was responsible for the shooting. you need to arrest him. his father is a volunteer for the local police. now, after that happened, the police tipped off. the family says their son, the nephew has not been back since that incident took place. he's at large. but really, right now, brianna, the police, their main goal is to neutralize him as they say, to make sure he cannot carry out another attack. every security agency, internal