The Charles County Sheriff’s Office is announcing an increase in the reward relating to the murder of Lynn Marie Maher, a cashier at the 7-Eleven on Middletown Road in Waldorf who was shot and killed on October 1 during an armed robbery. With the assistance of the FBI ($15,000), 7-Eleven ($10,000), and Charles County Crime Solvers ($2,500), the reward has been increased to up to $27,500 for information leading to the arrest and indictment of the suspect. As detectives vigorously pursue leads, they are urging people who have information about this case to contact them at (301) 609-6474. They are also evaluating the surveillance camera footage and, due to investigative reasons, are not releasing any footage at this time. Further, for those who do have information but want to remain anonymous, they may contact Charles County Crime Solvers at 1-866-411-TIPS. Tips can also be submitted online at or by using the P3Intel mobile app.  Det. J. Feldman is investigating.