Kalamazoo man, 24, charged with open murder in death of area woman Updated Dec 16, 2020; Posted Dec 16, 2020 Chad Michael White, 24, of Kalamazoo, was arraigned Dec. 16, 2020 on a charge of open murder in the death of Amber Marie Walker, 28. (MLive file photo)Daniel Vasta Facebook Share KALAMAZOO, MI — The Kalamazoo County Sheriff’s Office has identified Kalamazoo County resident Amber Marie Walker, 28, as the woman found dead Monday, Dec. 14 in Richland Township. Chad Michael White, 24, of Kalamazoo, was arraigned Dec. 16 on a charge of open murder as well as a charge of weapons-felony firearm. White is due back in court on Dec. 29 for a probable cause conference.