ad to open fire when Kegan Thomas refused to put down a shotgun. Kyle Mazza/Shutterstock

White said loud fights were common inside the Thomas home, and in one instance he said he even spotted the suspected killer climbing in through a window before another loud tirade.

 Every day in taht house there was a lot of domestic violence going on,  the neighbor said.  I just kept hearing them screaming at each other.

 He was a real weirdo. 

Police said Monday that Thomas remained in critical condition.

Additional reporting by Amanda Woods