Bruce M. Lyles (CCSO/Courtesy photo)

Police said Bruce Matthew Lyles, 27, was charged with first- and second-degree murder and other offenses in connection with the death of Michael E. Milstead, 32, also of Waldorf.

Milstead was found dead in the trunk of a car on July 15.

Police believe Lyles killed Milstead after an ongoing argument.

Lyles was served with an arrest warrant Thursday in the Charles County Detention Center, where he was serving time on an unrelated charge, police said.