An Indianapolis man has filed notice that he will appeal his sentence of life in prison without parole for blowing up a house and killing two neighbors in 2012.

Mark Leonard's public defender filed the appeals notice Friday with the state Supreme Court. Leonard was convicted in July of murder, arson and conspiracy in the explosion that also injured a dozen others, and damaged or destroyed dozens of homes in an Indianapolis subdivision.

A judge sentenced Leonard last month to two life sentences plus 75 years in prison.

Prosecutors said Leonard arranged a plot to destroy his then-girlfriend's house in a gas explosion to get $300,000 in insurance. Homeowner Monserrate Shirley has pleaded guilty to conspiracy charges, and three others await trial.