Indianapolis police have arrested a 62-year-old music teacher for allegedly starting a fire that killed her husband four years ago. Police said Gwendolyn Kirch, a teacher at St. Pius X Catholic School for 29 years, is responsible for a fatal arson on April 3, 2007. Her husband, 57-year-old David Kirch, died in the blaze. Kirch is charged with three counts of arson and one count of conspiracy to commit arson. Police are also seeking her son, Thomas Kirch, 26, who is also charged in the arson.