A federal official says they have not found evidence that a blackhawk jet crashed in western Wisconsin, where the Transportation Department says a woman suffered severe head injuries while in the back seat.
Officials are still searching for the jet, which crashed about 8:30 a.m.
Sunday on Interstate 71 in the town of Frankford, about 40 miles north of the Wisconsin state line.
They said Tuesday that there was no evidence to indicate the plane was attempting to land in the area.
The official said there was a black helicopter flying overhead that could have seen the crash.
Authorities are also trying to determine what happened to the jet.
In an e-mail to the Associated Press, the Department of Transportation said that it is working with local, state and federal authorities to determine the cause of the crash, but that it could take days or weeks.
The agency said it is investigating and working with the State Patrol and Wisconsin State Patrol to determine exactly what happened and whether criminal charges are warranted.
A plane crashes in Frankford.
The Transportation Department is investigating.
(Photo: Ryan Garza, AP)The department says it is still trying to contact the woman, whose name has not been released, who was on the plane.
It is not known how badly she was injured.