A Utah man confessed to stabbing his ex-wife to death on Wednesday when he called 911 and turned himself in . Spencer Gerlach , 20 , told police that he and his ex-wife Keltsie Gerlach were having a dispute on Wednesday afternoon that escalated into murder . The topic of their argument is not yet known . Chief Mike Nelsen , Brigham City Police Department told Fox that when police arrived , Keltsie was found dead in the living room with stab wounds . Scroll down for video . Confession : Spencer Gerlach , 20 , told police that he and his ex-wife Keltsie Gerlach were having a dispute on Wednesday afternoon that escalated into murder . Tragic murder : Keltsie Gerlach was found in the living room stabbed to death as her 15-month-old baby girl ( right ) was sleeping in the next room . The couple 's 15-month-old daughter was unharmed in her crib and was asleep in the next room . The baby was taken by the Division of Child and Family Services . The couple were recently divorced and Keltsie lived in her Utah apartment alone with her daughter . It 's unknown as to why Spencer was at her residence on Wednesday . Cache Valley Daily reports that Investigators interviewed Gerlach on Wednesday nightand are unsure of his motive for killing Keltsie . There were no indications inside the apartment that the couple had been fighting or struggling . A large knife at the scene and is believed to be the murder weapon . The victim ’ s body was sent to medical examiners to determine how many times she was stabbed . Spencer faces first-degree murder charges and was booked at Elder County Jail . Once in love : The couple , pictured in happier times , were recently divorced and Keltsie lived in her Utah apartment alone with her daughter . Tuned himself in : Spencer Gerlach told police he stabbed his ex-wife Keltsie Gerlach during an argument . Father : Spencer Gerlach , whose 15-month-old baby slept as he allegedly murdered his ex-wife , has been charged with first degree murder .
Spencer Gerlach , 20 , admitted to stabbing his ex-wife Keltsie Gerlach to death as their 15-month-old daughter slept in the next room . The baby girl was unharmed and was taken into custody by Child Services . The cause of argument that led to the murder is unknown . Spencer faces first-degree murder charges and was booked at Elder County Jail .