Wendy Miller from Cooroy, on the Sunshine Coast, was also caught up in the attack.
She was at a bar in the nearby Luxor Hotel with her husband when she saw what she described as a “man of interest” run by.
“We managed to make our way back to our room…” she told The Courier-Mail.
“We are in lock down.
“Our door is dead locked and a chair against the door.”
Ms Miller said the man sprinted through her hotel after coming off an escalator from the Mandalay Bay.
“The man that they [security] were chasing was wearing a security jacket like them,” she said.