A witness called police after the woman was observed pushing the child for an unusually long period of time
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A witness called police after the woman was observed pushing the child for an unusually long period of time.
When officers arrived, the 24-year-old was still pushing the child in the swing, and they realized immediately that the boy was dead.
The child had no signs of obvious trauma but had been dead for at least several hours.
The tragedy unfolded in at Wills Memorial Park in La Plata, Maryland, about 35 miles south of Washington D.C.
A post-mortem examination will take place later.
The mother, who has not yet been identified, was taken to a nearby hospital for medical tests.
Police have launched an investigation