MURDER, SUICIDE in NW Harris Co: father says his older son shot younger son, then killed himself. Dad says he couldn’t stop their fighting. #abc13 pic.twitter.com/CMTIqZvOWQ — Courtney Fischer (@CourtneyABC13) November 17, 2017

HOUSTON, Texas (KTRK) -- Parents in northwest Harris County are mourning the loss of their two sons after an apparent murder-suicide overnight.Deputies say Carlos Badillo, 29, and Juan Badillo, 23, got into an argument inside the family's home on Homebrook near Veterans Memorial around 9:30 p.m.The father says the argument escalated and moved outside where Carlos grabbed a gun, shot Juan, then turned the gun on himself.The father said he heard four shots, a pause, then another shot. He said Carlos was angry about something when he shot his younger brother.One of the brothers died outside the house. The other brother was taken to a hospital where he died.Deputies say the parents were inside the home when it all happened.Investigators are trying to determine the cause of the argument.