Amy Winehouse -- Signs of Life When Help Arrived After Amy Winehouse Died

source: TMZ

Sources connected with the Amy Winehouse death investigation tell TMZ ... paramedics found "signs of life" when they arrived Saturday afternoon, but she died before they could transport her.

TMZ sources were not specific as to the exact nature of the "signs of life." 

According to our sources, law enforcement "is operating under the suspicion" this an overdose, although police will not say on the record it's an overdose until the first postmortem exam Sunday morning.

As TMZ first reported, police on the scene determined there were no signs of foul play and there is nothing suspicious about the death.