Police: Heroic Safeway Employee Confronted Gunman In Store

A shooting occurred at a Safeway store where a man with an AR15 and a rifle opened fire, killing an 84-year-old customer and a 66-year-old employee, Donald Surratt Jr. Surratt confronted the shooter, likely saving lives. The shooter later took his own life, and police found Molotov cocktails and a sawed-off shotgun in his vehicle. No motive has been identified.

What did the police find in the shooter's vehicle?

What is known about the motive of the shooter?