What you describe does not sound like a criminal law issue but rather one of possible medical malpractice by the medical authorities at the jail which means the jail administrators, county or state, whoever was in charge of medical delivery at the jail. However, you may not have the legal right to go to a lawyer and seek recovery because that depends upon the relationship you had with the deceased. Secondly, from a malpractice standpoint it sounds like the cancer was advanced by the time he was in jail so the chances of recovery in such a case would be either minimal or none. A malpractice lawyer would have to review the records. Thirdly, there could be a civil rights issue but the requirements are extensive and difficult to overcome under these circumstances. The best thing to do is contact a lawyer in the general area who does malpractice and see if you can even start an investigation then follow the attorney's advice from there. Hope this helps.
It sounds as if his cancer was pretty advanced when he went to jail, and what is your legal relationship to the person. Were you married? Son, Daughter or Parent?
My name is Stephen R. Cohen and I have practiced over 38 years and can be reached at 213-819-1171. I practiced mainly in Los Angeles and Orange County, California. I am not seeking clients from existing relationships with other attorneys, and give only limited advise over the phone (the phone is primarily used to set appointments), these services do not create an attorney client relationship. I apologize for mispelling< as I am a lousy typist, My answers may offend as I do not believe in pulling punches or sugar coating the truth. Further regarding courts in other states my opinions are largely based on logic and what I think is the modern trend which is to consider the needs of the child.