The man accused of attacking American Idol host Ryan Seacrest's bodyguard has been sentenced to 15 days behind bars after pleading guilty to the assault.

Chidi Uzomah, 25, was charged with misdemeanour counts of battery, assault and possession of a switchblade on Tuesday after an altercation with the TV presenter's security.

Seacrest was visiting the Children's Hospital in Orange County, California when Uzomah approached him and asked for an autograph.

The star obliged, but when he turned away, Uzomah started to follow him, prompting the bodyguard to step in and intervene.

According to TMZ.com, Uzomah lashed out at the guard and attempted to choke him before he was arrested by cops.

After appearing in Orange County Superior Court via a video feed on Friday, the crazed fan was sentenced to 15 days in prison, three years' probation and ordered to "destroy" all weapons he owns.

If he fails to abide by the law when he's released, he faces either a six month prison term or a $1,000 fine.

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(This news article provided by World Entertainment News Network)