A man has been arrested at Paris Hilton's home in Los Angeles after she said he was trying to break in while holding two big knives.

Police say she was woken up by the sound of him banging on her windows.

Reports in the US claim she saw him on her CCTV cameras and called for help immediately.

The 29-year-old socialite posted a picture on her Twitter page of the suspect in handcuffs on her lawn, surrounded by police.

She tweeted: "So scary, just got woken up to a guy trying to break into my house holding 2 big knifes. Cops are here arresting him."

The Los Angeles police department says the man was arrested at around 6.30am and that his motive is unknown.

He's said to be in his 40s and was caught before he was able to get into the house. Police haven't released a name.