STAMFORD, Connecticut (WABC) --Police in Stamford are asking for help in figuring out what happened to a woman who was found unconscious behind a home.
The 30-year-old was discovered early Tuesday morning.
She is now in critical condition at the hospital in a medically-induced coma.
The woman was found at 6:45 a.m. at the bottom of a flight of stars behind a home on Henry Street.
She has severe head wounds that doctors say are not consistent with a fall, as well as lacerations to her hands, knees and face.
It was determined at the hospital that her injuries could have been the result of an assault.
A caller told police they had seen the woman hours earlier at the Metro-North train station a few blocks away.
Police reviewed surveillance footage and confirmed that she was at the train station around midnight.
But there is still a six-hour gap that they cannot fill.
"At this point until she gains consciousness we have nothing. There's no video, no witnesses, so we have very little to go on until she gains consciousness," said Stamford Police Lt. Diedrich Hohn.