Troy Riggs (WIBC.com file photo: Mike Corbin)

Indianapolis Public Safety Director Troy Riggs says it's going to take time to determine the cause of the deadly southside house explosion.

Riggs says investigators are focusing on what would've been the inside of the house. He says the investigation could take weeks. He says that includes possible appliances and whether there may have been a gas leak inside the house. He says a forensics team is sifting through the burned out remains for any clues. Riggs adds it'll be difficult because a lot of evidence has burned, but he says the city has top notch investigators on the case.

This follows a probe by Citizens Energy that concluded there were no gas leaks in either the main or lines that feed homes in the Richmond Hill subdivision where the blast killed two and wounded numerous others Saturday night.

MORE FROM WIBC NEWS:
» Indy Attorney Questions Citizens Energy (11-14-12)
» South Side Explosion Brings Back Memories From Richmond (11-14-12)
» Citizens Energy Rules Out Gas Leaks In Blast (11-13-12)
» Expert Explains Process of Investigating Explosion (11-13-12)
» South Side Homeowners Will Need Home Restoration Following Explosion (11-13-12)
» Homeowner Says Faulty Furnace May be to Blame for Explosion (11-12-12)
» NTSB Probing South Side Gas Lines (11-12-12)
» Company Where Explosion Victim Worked Issues Statement (11-12-12)
» Volunteers Sought After South Side Explosion (11-12-12)
» School Returns to Classes Without Beloved Teacher (11-12-12)
» Residents Briefly Getting to Go Back Into Homes After Blast (11-12-12)
» Investigators Still Looking for Answers in Sunday's Massive Explosion (11-12-12)
» Couple Feels Fortunate to Escape South Side Explosion (11-11-12)
» Damage from South Side Explosion Estimated at $3.6 Million (11-11-12)
» Explosion Kills Two in South Side Neighborhood (11-11-12)