( CNN ) -- Police searching for the suspect in a triple homicide in Georgia have released a 911 call from a man who says he was one of the killer 's intended targets . Authorities claim that the suspect , Robert Bell , 33 , used an assault weapon similar to an AR-15 to execute two adults and a 12-year-old boy on Sunday , September 15 . A fourth shooting victim , Justin Cato , 23 , `` laid low '' and then called the police when it was apparent that the gunman had left , said Cpl . Jake Smith of the Gwinnett County Police Department . In a calm voice , Cato tells the dispatcher that a man he did not know came to the house where he lived in Snellville , a city of about 18,000 east of Atlanta . The man did n't say anything and just started shooting , Cato tells the dispatcher . He also says everybody else in the house is shot . Cato was shot in the leg . The deceased victims were each shot multiple times , detectives said . They have been identified as : . -- Angelina Benton , 34 , who police say lived at the home and was Cato 's girlfriend . -- Benton 's godson , Raynord Daniel , 19 . -- Benton 's 12-year-old son , Joseph McDonald . Bell could be traveling to Chicago or Tennessee , where he has family , said Smith . He is considered armed and dangerous . Benton had invited Bell and his wife to stay with her about two weeks before the shooting , police said . `` They were down on their luck and needed a place to say , '' Smith told CNN . `` About a week later , the suspect 's wife moved out to Tennessee for a job , and he stayed there . '' On the night of September 15 , the victims and Cato were walking to the home when the suspect opened fire with the assault weapon , Smith said . `` We believe he shot and killed the man and the boy before pursuing Angelina down near the end of the driveway . '' Bell 's SUV was left at the scene along with the weapon . `` He was last seen walking away , '' Smith said . Investigators would not speculate on a possible motive . Bell is wanted on three counts of felony murder and one count of aggravated assault . Anyone with information is asked to call the Gwinnett County Police at 770-513-5300 .
Only one person survived a shooting near Atlanta on September 15 . Hide Caption 1 of 21 Photos: The suspect is considered armed and dangerous .