Cps- how much info is needed to report someone?

How much information is needed by CPS to formally investigate? I am aquainted to a couple that I keep hearing horrible things about. I have never seen anything happen, but my brother (whom I trust) has told me of a few things he witnessed. My brother is young and doesn't want to report (his words.. rat out) his 'best friend'. I've taken this as a silent plea from him to do something about it. I know their apartment's name and the fathers first and last name, and their cell number. Is this enough?

I think you actually have to see physical evidence of abuse or wrong doing or what have you. they will keep your name confidential though. the family will never know who reported them. honestly, I would just call cps...and explain the situation to them. even if you don't have evidence. there's no harm in being careful, especially when it involoves children. thanks for being so aware of your surroundings.

Im pretty sure they have to get to reports of abuse to investigate. Even if you just heard about it you should call them and file a report..they will know what to do with the information.

Dear nerd,
Legally since you haven't seen anything YOU are not obligated to report it. However, if your brother has witnessed something and does not report it and later it is found he saw first hand he can be charged under the law. Are you libel if you just hear about it not really but you do have a moral obligation. How could you possibly allow children to be abused when you could have done something to stop it. I know I sure couldn't live with that guilt. It's not a matter of ratting anyone out but saving some lives. Abuser are also calling for help...growing up is tough and with it comes making tough decisions. Calling children's protective services should be the first thing you do. Let them investigate the allegations and if they find nothing then you have done what you should and perhaps can live without the guilt. I understand how hard it can be for some to get involved but what you don't understand is if something did happen the guilt would haunt you forever. Do the right thing and perhaps save some lives.
Sue...good luck