SEOUL - Five people were killed and four others were hospitalised Saturday in an arson attack on a motel in downtown Seoul, police said. A 53-year-old man who said he started the blaze was arrested. Witnesses said a delivery man carried out the attack in a fit of anger after being denied a room at the two-story motel for allegedly being drunk. The man, identified only by his surname Yu, bought 10 litres (around two gallons) of petrol at a nearby service station, poured it on the ground floor and set it ablaze, they said.