INDIANAPOLIS (AP) - The search for what
caused a massive, deadly explosion that rocked an Indianapolis
neighborhood turned to natural gas Monday, with officials checking gas
lines and a homeowner saying a problem furnace could be to blame.
The National Transportation
Safety Board sent investigators to check gas main and other lines
serving the neighborhood where two people were killed and seven injured
in the weekend blast. Local gas supplier Citizens Energy said it also
was checking gas lines and a meter at the home that exploded.
But officials cautioned
that it was too soon to rule out other causes, saying only that they do
not believe a meth lab was to blame for the explosion that obliterated
two homes and severely damaged dozens of others.
"It's too early to
speculate that this might have been caused by a gas leak," Citizens
Energy spokeswoman Sarah Holsapple said at an afternoon news briefing.
The owner of one of the homes that was destroyed said there was a problem with the furnace in the last few weeks.
John Shirley, 50, of
Noblesville told The Associated Press that he received a text message
within the last week and a half from his daughter, who complained that
the furnace in the home where she lived with her mother and her mother's
boyfriend had broken. The malfunction had forced them to stay in a
hotel, the girl said.
When Shirley asked if the
furnace had been fixed, his daughter said yes. He said he wasn't aware
of any additional problems until he heard from his daughter again Sunday
morning.
"I get a text from my daughter saying 'Dad, our home is gone.' Then I called my ex-wife and she said what happened," he said.
His ex-wife, Monserrate Shirley, declined to comment Monday.
Scott Davis, president and
principal engineer of GexCon US, an explosion investigation firm,
questioned whether a furnace could cause the type of damage seen in the
neighborhood. Furnaces have multiple safety triggers that prevent them
from releasing that much natural gas.
"For a furnace to allow that much gas through, you'd have to defeat many of the safety features," he said.
Investigators said it could
be some time before they determine a cause for the blast that sparked a
massive fire, blew out windows, collapsed ceilings and shook homes up
to three miles away.
"It's a methodical investigation. You have to move one step at a time," said Gary Coons, the city's homeland security director.
Public Safety Director Troy Riggs said investigators will treat the area as a crime scene until they rule out foul play.
The blast forced about 200
people out of their homes in the once-tidy neighborhood of one- and
two-story single-family houses. Some have been allowed to reoccupy their
homes, and others have been escorted in to retrieve valuables and other
belongings. Adam Collins, the city's deputy code enforcement director,
said 29 remained uninhabitable Monday.
Mark Karnes, whose house is
four doors down from the blast site and suffered severe structural
damage, hoped to retrieve clothes and look for his cat. But he also
questioned the wisdom of going back inside the house given the extent of
the damage.
"Because the walls bowed out and separated from the ceiling, I don't think it's safe," he said.
The blast flattened the
house Shirley co-owns with his ex-wife and one next door that belonged
to second-grade teacher Jennifer Longworth and her husband, John.
Indianapolis police said Monday the bodies of the pair were found in the
basement of their home, which was leveled in the blast.
A candlelight vigil was
held Sunday night at the school where Jennifer Longworth teaches. Her
husband's employer, consumer electronics company Indy Audio Labs, issued
a statement Monday saying it was "saddened by the loss."
Greenwood Community Schools
Superintendent David Edds said Jennifer Longworth had taught at
Southwest Elementary School for 12 years. Her husband had worked at Indy
Audio Labs for 10 years and was director of product development and
technology, according to the company.
John Shirley said Jennifer
Longworth was quiet but funny and her husband was a huge Indianapolis
Colts fan who maintained a garden of beautiful wildflowers along the
side of the house.
"They were just very sweet people," he said.
Indiana real estate records show Shirley's house had been for sale for a year until it was taken off the market in March.