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INDIANAPOLIS, Ind. (September 13, 2015) – The man convicted of murdering his neighbors during the Richmond Hill explosion in 2012 has filed an appeal of his sentence.

Mark Leonard was convicted by a jury in South Bend this summer for the insurance fraud explosion that killed Jennifer and Dion Longworth and caused $4 million in damages to a neighborhood on Indianapolis’ south side.

St. Joseph superior judge John Marnocha sentenced Leonard to two life terms in prison without parole and an additional 75 years for his convictions on murder…arson…conspiracy and insurance fraud charges.

Friday Leonard’s attorneys filed an appeal of those sentences with the state supreme court.

Leonard is housed at the Indiana state prison in Michigan City.

He still faces charges of insurance fraud and conspiracy to commit murder for allegedly trying to have a witness against him killed.