A woman has been arrested for allegedly using a brick to break in to Simon Cowell's London mansion while the TV personality was home, his publicist said.

The Sun newspaper said Cowell, 52, was watching television at the time of the incident Saturday night.

"There was a loud bang and Simon rushed upstairs to find out what was going on," Cowell's spokesman Max Clifford said.

"It came from the bathroom so he went in -- and there was a woman standing there holding a brick. She had smashed her way in through the window and it was unclear how long she had been there or what she was doing."

The Sun said Cowell's security detained Leanne Zaloumis, 29, until police arrived. She was then arrested and charged with aggravated burglary.

"It was a very frightening experience for Simon, who told me it was like something from a horror movie. He was just very lucky that all she had was a brick. She could have had a knife, a gun or any other weapon," Clifford said.

Cowell is a judge on "Britain's Got Talent" and "The X Factor."