joel and mary rich stood with lobbyist jack burkeman today and asked for help. there's been no breaks in the case since their son was gunned down early in the morning of july 10. a boched robbery they believe night out. >> he fought with them and whoever did it, they have some bruises. they had blood on them. so, if you saw anybody running inal his, if you saw anybody coming home that was bruised and bloody, please call the police, let them check it out. >> reporter: joel and mary rich revealed new information today about the case. telling reporters that there were no sell casings the scene. indicating their son was likely shot with a revolver. they also revealed more about what seth rich's girlfriend haerld over the phone as rich walked home that morning. >> she heard some voices or something. seth said -- she asked, are you home? he was a block away, so, yeah, i'm home. and he said, i've got to go. put the phone in his pocket and so what happened in those two minutes, we would love to know. >> reporter: the riches who live in omaha, nebraska are here to bring