The pop star was singing “(You Drive Me) Crazy” as a man allegedly did a cartwheel before running toward Spears and her dancers. After being kicked, a guard ended up tackling the man as backup dancers assisted in holding him down.
Spears, who just returned to Vegas after a break from her residency, soon realized something was up, asking her personal bodyguards, “Is something OK? What’s going on?”
She was, understandably, stunned.
Audience members screamed “We love you, Britney!” as the man was detained and soon ejected from The Axis theater, which seats 4,500 people.
According to local program “13 Action News,” attendees said Spears returned to finish her set “like a champ.” She is set to perform again Friday and Saturday nights.
HuffPost has reached out to Spears’ rep for comment.