(NEWSER– "Kai the hitchhiker" became an Internet celebrity in February when he intervened in a gas station attack in Fresno, California, hitting a man on the back of the head with a hatchet to stop him from assaulting a woman, then giving a very entertaining (and profanity-laced) interview to a local news station. The 24-year-old has since been viewed millions of times on YouTube and even appeared on Jimmy Kimmel Live—but his life took a very dark turn this week, Mashable reports. Kai, real name Caleb Lawrence McGillvary, was charged with murder; he had been on the run, but police arrested him last night at a Philadelphia Greyhound station, ABC 30 reports.

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