Police executed a search warrant at the Las Vegas apartment of Shane Tamura, where the items obtained included a goodbye note and a bipod for a rifle.

Police searched Shane Tamura’s employee locker at a Las Vegas Strip casino in their attempts to piece together why he killed four people and then himself in New York City earlier this week, the 8 News Now Investigators have learned.

Authorities confiscated several items from a Las Vegas apartment tied to a gunman who used an AR-15-style rifle to kill four people in Manhattan, according to records made public Friday.