Two women face criminal charges after deadly traffic incidents in Charles County, authorities said.

The county sheriff’s office arrested Jacqline V. Kierra Mack, 21, of Waldorf on March 31. According to authorities, Mack lost control of her car while on Holly Tree Lane in Waldorf, jumped the curb and hit Andre N. Shorts, 31, who was walking in a grassy area off the roadway on Nov. 11.

Shorts, of Clinton, later died at a hospital. A county grand jury indicted Mack on charges of vehicular manslaughter, according to authorities, who said speed and alcohol contributed to the accident.

Rachel A. Buckler, 21, of Pomfret was indicted on a charge of leaving the scene of an accident involving death Sept. 1-2 near Port Tobacco, according to authorities.

A passerby found Thomas M. Roepcke, 47, of Port Tobacco unconscious on the side of Chapel Point Road near Taurus Lane, authorities said. He later died at a hospital.

Buckler turned herself in about a week later, authorities said, and investigators continued to collect evidence ahead of the grand jury’s indictment.

Buckler was arrested March 28.