Cops: Texas Teen Killed Mom, 2 Neighbors He killed himself before 19-hour standoff By Rob Quinn, Newser Staff Posted Feb 8, 2016 2:18 AM CST 38 comments Comments In this photo from Saturday, Uvalde County sheriff's deputies guard the intersection to a neighborhood several miles outside of Uvalde, Texas. (Kin Man Hui, San Antonio Express-News via AP) (Newser) – Police in Texas are trying to figure out what led to three murders, a suicide, and a "standoff" in which a mobile home full of dead people was surrounded by police overnight. Police say that on Friday, 19-year-old Dylan Westerburg killed his mother, Jennifer Diane Jacques, 42, before going next door and shooting two brothers dead, CBS News reports. After a witness called police, up to 60 officers and a Texas Department of Public Safety SWAT team surrounded the brothers' mobile home overnight, the AP reports. The SWAT team finally entered on Saturday afternoon, 19 hours after police were first called, to discover that Westerburg had apparently killed himself as soon as officers arrived. Westerburg and his mother shared a cabin about 20 yards from the mobile home south of the town of Uvalde, which is around 85 miles west of San Antonio. The Uvalde County sheriff says roads were closed and nearby homes evacuated out of caution. "I didn't know how many shooters I had in the Norton residence when I found the mother," he says. "You're looking at farm- and ranchland. You could get into a dangerous situation." The dead brothers have been identified as Arthur Jerome Norton, 58, and Phinny Paul Norton, 60. Their sister, Karen Norton Behn, tells KSAT that Jacques had been having a romantic relationship with Phinny, and Arthur had called police around a week ago because he was worried about Westerburg.