NTSB: Collecting Perishable Evidence at Gaithersburg Plane Crash Scene (VIDEO)

The National Transportation Safety Board member Robert Sumwalt said investigators will be on the scene for about a week collecting what he called “perishable evidence” in the plane crash in Gaithersburg that killed three people on board the jet and three others in a house it hit.

Watch the press conference here.

Here’s what we know:

It was a Phenom 100 twin engine jet en route from Chapel Hill, N.C. making an approach to Montgomery County Airpark runway 14 at about 10:44 a.m. The jet was reported by eyewitnesses to be diving and swaying before it crashed into three homes on Drop Forge Lane. Sumwalt said the plan sheered through the roof of one house and crashed into the front of a second house, resting in its driveway. A wing of the plan tore off the fuselage and hit the third home which was demolished.

Inside that home a mother, Marie Gemmell and her two children, one-and-a-half-month-old Devon, a 3-year-old Cole died in the second floor bathroom, according to Fire Chief Steve Lohr.

“The kids were found with their mother who was probably trying to shelter them,” said MCFRS Spokesman Pete Piringer.

Police said the father of the children and an older child were not at home at the time of the accident.

The bodies of the three onboard the jet were being extricated from that plan Monday night and fire officials are expected to monitor the scene for any hot spots. Piringer said the jet was valued at $4 million. He said damage to the Gemmell house is estimated at about $400,000 to $500,000. The home next to the Gemmell home, with no fire damage, has estimated damages of about $50,000 and Piringer said the home at 19740 where the plane struck its roof has about $150,000 of damages. There were no other injuries reported in either of the two other homes.

About Krista Brick

Krista Brick is a multi-media journalist with Montgomery Community Media.

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