SEOUL, South Korea, Rajab 29, 1435, May 28, 2014, SPA -- A fire believed to have been set by a man with dementia suffocated 21 people and injured seven others Wednesday at a South Korean hospital that specializes in dementia and palsy patients, police and fire officers said, according to AP. An 81-year-old patient was detained on suspicion of setting the fire at the Hyosarang Hospital in Jangseong county. Security video showed the man entering the room where the blaze began and the remains of a lighter were found in that room, local police station chief Noh Kyu-ho told a televised briefing. Noh said the man, only identified his surname Kim, denied responsibility. --SPA 13:39 LOCAL TIME 10:39 GMT www.spa.gov.sa/w