A woman was killed Sunday morning and her husband was injured in a one car crash on I-95 just south of Medway, according to police.

Sandra Gifford, 49, of Hermon was killed instantly when the car she was driving went off the road in the median and overturned several times, coming to rest on its roof.

Her husband, Kevin Gifford, 55, sustained non-life threatening injuries and is being treated at the Millinocket hospital.

Troopers said the crash took place about 10:45 a.m. and it is not clear why Gifford lost control.