FLOYD, Iowa (AP) -- More than 100 volunteers from across northern Iowa helped search for a missing 5-year-old girl Saturday.
Evelyn Miller was reported missing from the rural Floyd apartment her mother shared with two other children and her boyfriend.
Her mother, Noel Miller, 21, said she was working at the Nora Springs Care Center Thursday night and her children were at home with her fiance, Casey Fredericksen.
She said she returned home from work at about 6:30 a.m. Friday and the door to the apartment was partially open.
Miller's other two children and Fredericksen were sleeping, but Evelyn was gone, Miller said.
She called authorities and an immediate search began. The apartment building is two miles south of Floyd and about 20 miles east of Mason City.
Searchers scoured corn and soybean fields and outbuildings.
Two men, who are friends of Fredericksen said they last saw the girl at 2 a.m. Friday.
Ten investigators from the Iowa Division of Criminal Investigation were interviewing everyone connected with the family, Floyd County Sheriff Rick Lynch said Saturday.
"We need to rule everyone out," he said. "Right now, we have no clue what happened to her."
Search planes and volunteers on horseback from Osage were assisting in the search.
Creeks and waterways were getting special attention Saturday, Lynch said.
He said the search would continue through the weekend.
"We aren't anywhere near considering an end to this search," he said.
An Amber Alert has not been issued because there is no suspect or suspect vehicle identified, Lynch said.
Evelyn Miller was described as a white girl about 3 feet, 5 inches tall, weighing around 40 pounds. She has blond hair, hazel eyes and a missing bottom tooth. She was last seen wearing a blue shirt with flowers on the left side and light blue shorts with flowers.