Photo by JEFFREY HASTINGS The damaged tree and debris on the grouind mark the scene of the weekend crash in Amherst that left a passenger with serious head injuries. The driver was unhurt but was cited for prohibited use of a mobile device and operating without a license, police said. (Photo by JEFFREY HASTINGS)

AMHERST — A 21-year-old Nashua woman was cited for prohibited use of a mobile device and driving without a valid license over the weekend after the car she was driving crashed into a tree and left her passenger with serious head injuries, police said.

Alexis McDonough was driving west on Thornton Ferry Road 1 when her car left the road and struck a tree at about 2:20 a.m., police said.

McDonough wasn’t injured, police said, but her passenger, a man whose name, town and age they didn’t provide, was rushed to St. Joseph Hospital in Nashua with head injuries that police described as serious and life-threatening.

His current condition wasn’t immediately known.

The crash took place in front of 17 Thornton Ferry Road 1, police said, adding that no other vehicles were involved.

Photo by JEFFREY HASTINGS A man with a rake stopped at the scene of the crash last week on Thornton Ferry Road I in Amherst that left a passenger with serious head injuries. The driver was unhurt but was cited for prohibited use of a mobile device and operating without a license, police said. (Photo by JEFFREY HASTINGS)

They didn’t say whether McDonough may face additional charges, but did say the crash remains under investigation.

Dean Shalhoup may be reached at 594-1256 or dshalhoup@nashuatelegraph.com.