In 2004, he was arrested in Murfreesboro on charges of assault and resisting arrest.
On Monday, Montano was reported to be missing and his whereabouts were unknown up to the moment when police were alerted on Wednesday that there was an armed man inside a theater showing the "Mad Max: Fury Road" movie in southern Nashville.
Montano was confronted by police and lethally wounded after attacking them with a pellet gun. Alongside the pellet gun he had pepper spray and a hatchet.
Only the assailant was killed. A family of three was treated for pepper spray, and another man had his shoulder bruised by the ax.