The grieved city of Daegu held a solemn ceremony Sunday, mourning the victims of the arson attack at a subway station. A siren went off at ten a.m. local time throughout the city of Daegu, signaling a moment of prayer for those who lost their lives in the fire. On Tuesday, a fire in a subway station killed at least one-hundred-30 people. Police are blaming arson for the fire. Investigators said the fire was ignited by a 56-year old man who has a history of mental illness.