It happened on Monday morning in Hagerstown, authorities said. The worker died at the scene.
Police said an autopsy should provide more information about the human remains found near Flintstone.
Amanda Wright and Besline Joseph, both of Mardela Springs, were both arrested on Wednesday.
A barricade ended with two troopers and a suspect shot, Maryland State Police reported.
A former coach in Charles County who admitted he sexually assaulted dozens of boys has now pleaded guilty to child porn charges.
A former coach and teacher’s aide in Maryland admitted he sexually assaulted dozens of boys and attempted to transmit HIV.
Firefighters needed about 45 minutes to bring the inferno under control
The cop could face up to 10 years in prison for the charges.