At the scene, officers reportedly found an unresponsive woman in her 40s with stab wounds, and medical personnel pronounced her dead at the scene. Police said the suspect, Alexander Fitzgerald Marshall, fled the scene before officers arrived.
Marshall was married to the victim.
According to KLAS, investigators allege the suspect and his wife got into a dispute before Marshall stabbed her.
The suspect allegedly fled the scene before officers arrived and barricaded himself inside a maroon Nissan pickup truck near Interstate 215 and Pecos Road.
At approximately 5:30 a.m., Las Vegas Metropolitan Police Department SWAT reportedly took Marshall into custody and transported him to a local hospital for self-inflicted injuries.