Sheriff Richard Stringer says foul play is suspected in the disappearance of Terri Sullivan.
Using a helicopter, an aerial search of the area where she went missing has begun this morning surrounding Clark Place Road in Tibbie.
Hours were spent searching property in Mobile County Wednesday in connection with the disappearance.
Sullivan was last seen early Sunday morning when she left for work at Springhill Medical Center. She never made it to the hospital. Her cell phone, a bracelet and other personal items were found on the dirt road where investigators say there were signs of a struggle.