Who lived here, what did they do for a living and what did they know?

The house explosion that killed two people and destroyed several homes in an Indianapolis neighborhood is now a homicide investigation, authorities said, though no suspects have been named.

Indianapolis Homeland Security Director Gary Coons made the announcement Monday evening, shortly after a funeral was held for the husband and wife who were killed. The couple lived next door to the house where investigators believe the blast occurred.

[link to news.yahoo.com]