INDIANAPOLIS (AP) – It will be at least another day before the first house demolitions begin the Indianapolis neighborhood ravaged by an explosion that killed two people.

City officials say that demolition permits needed to be requested Monday and that work could start Tuesday on tearing down some of the damaged houses in the Richmond Hill subdivision on the city’s south side.

Building inspectors last week ordered the demolition of 29 houses by Dec. 20. Four other homes, including two that were leveled in the Nov. 10 explosion, are being maintained as police investigate what they believe was an intentional natural gas explosion.

No arrests have been made.

Dozens of other houses were also damaged in the explosion and total damage has been estimated at $4.4 million.