The Sanborn County Sheriff confirms that the Codington County cadaver dogs searched an area south of Alpena on Friday for any sign of Rachel Cyriacks.
The Woonsocket woman hasn't been seen in more than five months.
The searchers scoured an area in northern Sanborn County and southern Gerald County for about four hours. Authorities decided to look at the area because it has been dug up for drainage work.
They didn't find anything, but officials want farmers to be on the lookout as they till their fields this spring.