Hollywood is mourning the death of "Glee" star Cory Monteith. The 31-year-old singer was found dead inside his hotel room in Vancouver, Canada Saturday night. Police ruled out foul play saying that the singer was alone in his room. Fans, friends and Monteith's Glee co-stars expressed their sadness over his passing. Last March, Monteith entered a rehab facility due to drug addiction. Umagang Kay Ganda, July 15, 2013