NEW YORK (AP) — The potential for serious criminal charges to be brought against family members of jailed financier Bernard Madoff (MAY'-dawf) seems to be fading months after federal prosecutors in New York began studying evidence.People with knowledge of the case say investigators gave prosecutors potential criminal evidence against a brother, a son and a niece of Madoff in the spring with expectations that a decision would be made by summer's end. Federal prosecutors have taken no action, suggesting potential criminal evidence against family members might be weak.All three relatives have denied wrongdoing.Three former employees and associates of Madoff have pleaded guilty to charges and are cooperating. Five others have pleaded not guilty. Madoff is serving a 150-year prison term after admitting cheating thousands of people out of billions of dollars.