A Greenwood teacher and her husband are the two confirmed victims in Saturday's explosion.
Family members say Dion and Jennifer Longworth, died in the explosion on the city's south side.
Jennifer Longworth was a teacher at Southwest Elementary School. A vigil was held at the school Sunday night where masses of people gathered.
Southwest Elementary School will run on a two hour delay Monday morning.
The investigation into the explosion on the south side of Indianapolis could take weeks, an official with Citizens Energy said Sunday morning.
More than a dozen homes were damaged or destroyed after a large explosion rocked a south side neighborhood late Saturday night.
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