My brother has a big issue in his life. He needs help but no one knows what to do..?

he had a baby with a girl 7 years ago. he cheated on her and all that and she left him and moved across the state. she took him to court for child support and he was ordered to pay $400 a month. well, he did for a while while he had a job. then he lost it and his license and hasn't worked since. in the last 6 years, he's had 4 more kids with 3 different women. bounced from place to place cuz his gf is crazy and he owes almost $30,000 in child support. he is stuck living with my dad who drives him crazy because he's old. i used to let him stay here, fed him, smoked our ciggs, would drive to get his two sons for him to visit etc. but for the past month and a half, he's started treating everyone like crap. his on/off gf won't let him come home because her mom hates him and won't support her/the kids if my brother is there. so that causes him grief. he's went to court a few times for not paying, got out of it twice with the pretense of having a job, then quitting it. then he actually got sentenced to a month in jail and got bailed out. for the past 2 years, he's not went to one court hearing. he sounds terrible i know, but he's capable of so much. he's been talking about killing himself in detail and all he wants to do is play games and party. he NEVER will talk about the child support.he's depressed, moody, irritable and just impossible to be around anymore over this. he says he can't work cuz the police will come and arrest him. he's been warned he'll go to jail for 2 years...2 years ago. what in God's name should be done??? what CAN be done?? we're all at a loss and this has brought our family down for way too long. it's tearing my mother up and adding stress on us all for having to take care of a 29 year old man!! PLEASE help!!