What is it with Rihanna and random incidents these days? First she has a bottle thrown at her by a fan angry about her reconciliation with Chris Brown, and now someone is arrested for trying to break into her house.

TMZ reports that neighbors spotted a man angling around RiRi's home in the Pacific Palisades and apprehended him.

According to law enforcement sources, the unidentified man told police that another person gave him instructions -- via email, no less -- on how to break into her house.

Low and behold, he tried and they worked. He spent some time in her house, but then her neighbors realized something was amiss. They detained the intruder and called the police, who took the man into custody. He's now under investigation for burglary.

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