3 charged in Indianapolis neighborhood explosion set for court appearance

Pretrial conference set for Wednesday

INDIANAPOLIS - Three people who prosecutors said blew up a house and devastated an Indianapolis neighborhood in an insurance fraud plot are set to appear in court on charges of murder and arson.

A pretrial conference is scheduled for Wednesday in Marion County Court for Monserrate Shirley, her boyfriend, Mark Leonard, and his brother, Bob Leonard.

Special Section: Indianapolis Explosion -- http://www.theindychannel.com/indianapolis-explosion

The three are charged in the Nov. 10 explosion that killed a couple who lived next door and destroyed five homes, including Shirley's. They were all arrested in late December.

The explosion caused widespread damage to dozens of other homes in the subdivision, many of which had to be demolished.

Investigators believe the three conspired to fill Shirley's house with natural gas by tampering with natural gas pipes and valves, and programmed a microwave to start on a timer to ignite the gas.

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