Ke$ha’s music producer Dr. Luke is in serious danger. Ke$ha’s got some caring fans and they’re PISSED… blaming Luke for her eating disorder. LAPD’s Threat Management Unit filed legal docs are asking for a search warrant to find the people who are threatening Luke’s life on Twitter. The crazy, threatening tweets started after news broke that Ke$ha entered rehab for an eating disorder because Luke taunted her about her weight. Ke$ha’s friend claims that Luke told her she “looks like a f**king refrigerator.” See some of the death threats below!