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Indy House Explosion: Jury Finds Man Guilty in Deadly Insurance Scam

A second man has been convicted in a scheme to blow up an Indianapolis house as part of an insurance scam — a plot that left a neighboring couple dead.

Bob Leonard, 57, was convicted of all 51 counts, including 2 counts of murder, by a grand jury Wednesday, NBC affiliate WTHR reported.

His half-brother and the accused ringleader of the scheme, Mark Leonard, was convicted in July and is serving a life sentence, according to prison records.

Related: Alleged Ringleader Convicted of Murder in Deadly Indiana House Explosion

The blast, fueled by natural gas and gasoline, left neighbors John “Dion” Longworth and Jennifer Longworth dead and 80 homes destroyed or damaged, prosecutors have said. The explosion caused an estimated $4 million in damage.

Prosecutors said Mark Leonard conspired with his then-girlfriend, Monserrate Shirley, to blow up the house in order to collect $300,000 in insurance money. Bob Leonard was accused of actually setting up the explosion, in which the home was flooded with natural gas, according to court documents.

Shirley took a plea deal last January and agreed to testify against the Leonards in exchange for most of the charges against her being dismissed, according to court documents. She pleaded guilty to conspiracy to commit arson, a charged that potentially carries between 20 to 50 years in prison, but a judge will have discretion in the sentence imposed.

The judge ruled that Bob Leonard is eligible for life without parole, according to the station. He is scheduled to be sentenced on March 18.