Texas gunman had texted threats to his mother-in-law, who attended the church he attacked

BRAUNFELS, Texas - The mass shooting at a Texas church that left 26 people dead, including an 18-month-old child, may have involved a domestic dispute with relatives who were in the congregation, officials said Monday, discounting religion as a possible motive.

Devin Patrick Kelley had threatened his mother-in-law - who sometimes attended the First Baptist Church in Sutherland Springs - over text messages before attacking the church on Sunday.

But she was not in attendance as Kelley, 26, a resident of Comal County, Texas,