Emperor Brihadratha Maurya was the last Mauryan King of Mauryan Empire. He was killed by Pushyamitra Sunga, a military General in the Mauryan Army.
Brihadratha Maurya had a vast empire. The extent of his empire extended from Jalandhar in the North India to the river Narmada in the South.
One day, Pushyamitra Sunga invited Mauryan Emperor Brihadratha to check an army parade, and killed him there. It is a rare occurence in Ancient Indian History that a Military General could murder a ruling king in the presence of the royal army. This incident took place in 185 B.C.
After the death of Brihadratha Maurya, the Mauryan Empire collapsed. Pushyamitra Sunga captured the throne of Magadha.