UPDATE 10PM 8/15: Two people are in custody in the abduction of two Amish sisters in upstate New York.  

The St. Lawrence County District Attorney's office says a man and a woman were taken into custody at their home about 20 miles from where the girls were taken Wednesday.  

Twelve-year-old Fannie and seven-year-old Delila Miller were found wet and cold but otherwise unharmed 24 hours after being kidnapped.  

Authorities say the girls were dropped off 15 miles from their home.  

They walked to the nearest house and the man who opened the door recognized the girls from news reports and took them home. 

ORIGINAL STORY: A prosecutor in northern New York says two young Amish girls found safe a day after they disappeared from their family's farm stand have given investigators information she hopes will soon lead to an arrest. 

St. Lawrence County District Attorney Mary Rain says she can't comment on what happened to 7-year-old Delila Miller and 12-year-old Fannie Miller, who vanished Wednesday evening after a car pulled up to their family's farm stand. 

She says she doesn't want to compromise any future prosecution by releasing details.  Meanwhile, Sheriff Kevin Wells says the search for whoever took the girls continues.

The girls turned up unharmed last night at a house in Richville, near the Canadian border.  That's about 15 miles from where they disappeared.