Las Vegas police said Thursday they had investigated an incident between French NBA top draft pick Victor Wembanyama's security and pop star Britney Spears.

Wembanyama is in Las Vegas ahead of his first game in the NBA Summer League against Charlotte on Friday and was heading to a restaurant when he was spotted by fans - and Spears.

Media reports said that Spears was pushed away by Wembanyama's security, which the singer's husband Sam Asghari said was "violent" and "out of control".

Wembanyama told reporters after practice that he only heard of Spears' involvement some hours after his dinner.

Sharing her side of the story on her Instagram Stories, Spears said she had simply wanted to greet the player and questioned Wembanyama's account.

"Traumatic experiences are not new to me and I have had my fair share of them. I was not prepared for what happened to me last night," she wrote.

"I recognised an athlete in my hotel lobby as I was heading to dinner. I later went to a restaurant at a different hotel and saw him again. I decided to approach him and congratulate him on his success.

"It was really loud, so I tapped him on the shoulder to get his attention. I am aware of the players statement where he mentions 'I grabbed him from behind' but I simply tapped him on the shoulder," she said.

"His security then back handed me in the face without looking back, in front of a crowd. Nearly knocking me down and causing my glasses [to fall] off my face."

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