The incident happened around 5:30 p.m. at Cheyney and Station Roads in Thornbury.
Action News is told by sources that a man said to be in his late 20s decided to take his own life by combining a number of toxic materials inside a small camping tent.
Later, it was found he had announced his intentions to take his own life on a social media site.
The man's mother came down to the tent, reportedly to stop her son, and was overcome by the fumes.
She was taken to Crozer-Chester Medical Center where she has been treated and released.
One of the troopers who arrived on the scene was taken to Riddle Memorial Hospital as a precaution.
Hazmat crews closed down Cheyney Road through the night.
