Police think a man killed by a woman who grabbed his gun and shot him when he attacked her likely was a serial killer, and they’re now investigating his potential connection to murders of women in several states. His MO was to find victims through online escort service ads. Cops found “several axes, a shovel, bleach, handcuffs, knives, a machete and other items” in his car — stuff he might have used to dismember and dispose of bodies. (Read story here.)