A woman was found in a Maryland park pushing her dead toddler in a swing, and authorities say she may have been there all night.

Charles County Sheriff's Office said in a news release Friday that police found the unidentified woman in a park with her dead 3-year-old son in the town of La Plata after receiving a call early Friday morning. The release said officers saw right away that the toddler was dead, and that his body showed no signs of trauma.

Richardson says the child's body was taken to a medical examiner for an autopsy and the mother was taken to a hospital for a medical evaluation.

La Plata is located about 30 miles southeast of Washington, D.C.