<p>Former Harvey Mayor Eric Kellogg was never charged in a sprawling federal corruption investigation that engulfed the south suburb, but members of his family keep paying the price.</p><p>On Tuesday, Kellogg’s older brother, 78-year-old Derrick Muhammad, was sentenced to six months in federal prison for shaking down towing companies while serving as a Harvey police officer. U.S. District Judge Virginia Kendall also ordered him to pay $75,000 to the government.