Metro said a group of boys were walking on the sidewalk when a vehicle struck them as it tried to pass another auto on the shoulder.
The auto drove through a light pole, into four boys who were walking on the sidewalk, then into another light pole and finally stopped when it hit a tree, according to police. The driver then ran away from the scene and was reportedly trying to change his clothing as he ran.
Police say the driver may have been speeding and was trying to pass another vehicle when he ran onto the sidewalk.
The ages of the boys that were killed were 12, 12 and 15.
Las Vegas police confirmed on Sunday morning that the driver has been taken into custody. They have not released his name or mug shot at this time.
Witnesses saw Eskandarian running from the scene, and he was arrested six hours later and booked into Clark County Detention Center, according to police.