On September 7 at 11:57 p.m. officers responded to the 5000 block of Vane Court in Waldorf for the report of a male who had been assaulted. Upon arrival, the victim, John Carl Lachenmayer, 71, was found inside his home with numerous injuries. He was transported to a hospital where he was pronounced deceased the following day. Detectives identified the suspect as the victim’s son, Justin Michael Lachenmayer, 38, who resided in the same home. Lachenmayer was charged with first-degree murder, second-degree murder, assault, and other related charges. He is currently being held at the Charles County Detention Center. Detective Johnson is investigating.

Justin Lachenmayer

Diane Richardson
Media Relations Office
301-609-6557 or 240-682-1658

The CCSO was accredited by the Commission on Accreditation for Law Enforcement Agencies, Inc. (CALEA) in 2001 and has since earned the highest rating of Excellence. Established in 1658, the CCSO is one of the oldest law enforcement agencies in the United States. For more information, visit www.ccso.us.

Charles County Crime Solvers offers rewards of up to $1,000 for information that leads to the arrest or indictment of a person responsible for a crime in Charles County. All individuals who provide tips through Crime Solvers will remain anonymous. Anyone with information about an unsolved crime or the location of a fugitive may contact Charles County Crime Solvers by calling 1-866-411-TIPS. Tips can also be submitted online at www.charlescountycrimesolvers.com or by using the P3Intel mobile app, which can be found in the Android Store and Apple store by searching P3tips. For more information about the P3 program, click on this link: www.p3intel.com.