HOUSTON (KTRK) -- Three Fort Bend County teenagers are facing murder charges for the shooting death of their mother's boyfriend.Lavaris Harris, 19, Darlecia Johnson, 17 and a 16-year-old juvenile male are in custody in Fort Bend County. They are charged with killing Bennett White, 40, at their home in Panhandle Drive near Hollow Canyon in Mission Bend around noon Tuesday. White is their mother's boyfriend. She was on the scene and visibly distraught Tuesday afternoon.A three-year-old girl was also inside the house when the deadly shooting happened.According to the Fort Bend County Sheriff's Office, deputies responded to house and what they thought was a home invasion. Turns out it was a fight between the teens and White. It escalated."I think it's crazy. They're new to the neighborhood. You know, seem fairly quiet, normal family," said Vanessa Little, shocked to come home to find the crime scene tape at her neighbor's house.Little said the family moved in about a month ago. On Monday, she saw one of the boys mowing the yard.Officials haven't released a motive. Three days ago, Johnson posted on Facebook, "I hate my mom's boyfriend" along with several emojis.The teens will go before a magistrate Wednesday morning.