An explosion leveled a house in Arlington, Va., on Monday night. Police are continuing to investigate the cause of the blast. Photo: Alex Wilson/Associated PressThe suspect who fired a flare gun from inside his Arlington, Va., duplex home, which later exploded, is presumed to be dead, police said. Arlington County Police Chief Andy Penn said investigators are identifying the remains found at the property in the Washington, D.C., suburbs, and believe them to belong to the suspect, 56-year-old James Yoo .

---

Persons: Alex Wilson, Andy Penn, James Yoo Organizations: Police, Associated, Arlington County Police, D.C Locations: Arlington , Va, Arlington, Va, Washington