DETROIT -

Police are planning an early morning search for three missing boys from Morenci, Mich.

Andrew, Alexander and Tanner Skelton have been missing for almost a year. Police will continue searching for the boys Nov. 25 along U.S. Highway 127.

Investigators believe the boys' father, John Skelton, was driving on the highway around the time the boys went missing.

Skelton is in prison after pleading no contest to unlawful imprisonment.

A prayer service is scheduled for Nov. 17 at Morenci High School. The boys were last seen Nov. 17, 2010.