Mandalay Bay staff had at least 10 interactions with gunman during his stay, hotel reveals

— -- Workers at the Mandalay Bay Hotel & Casino had more than 10 interactions with Las Vegas gunman Stephen Paddock in the days prior to the mass shooting, but staffers didn't notice anything unusual about the killer, according to MGM Resorts International.

"Importantly, as it relates to the terrible tragedy on October 1, there were numerous interactions with Stephen Paddock every day at the resort, including a room service delivery and a call with housekeeping on October 1, all of which were normal in nature," MGM Resorts International said in a statement to ABC News. "As a result of these interactions, there was no need to conduct a welfare check. Further, Mandalay Bay staff, room service and housekeeping had contact with Paddock or entered his suite more than 10 times over the course of his stay, including the three days leading up to October 1."

Paddock, 64, killed 58 people on Oct. 1 after spraying attendees at an outdoor country music festival with bullets from his 32nd floor hotel room. Paddock fatally shot himself.

The hotel was scrutinized by critics following the shooting who wondered if hotel staff did indeed check in on Paddock, wouldn't his arsenal of weapons and thousands of rounds of ammunition be noticed.

MGM Resorts International further explained in its statement, "MGM Resorts is focused on supporting the health and welfare of our guests. All MGM Resorts properties follow a health and welfare check operating procedure that stipulates a welfare check be performed after two consecutive days where a Do-Not-Disturb sign has been displayed on the door and the guest has not interacted in-person or by phone with housekeeping or other hotel staff over the same period. In addition, our staff reserves the right to enter the room if it is deemed appropriate to conduct a welfare check."