The mother of three Michigan boys missing since Thanksgiving 2010 says she now believes they're dead.

Tanya Zuvers says she's hanging on to a sliver of hope but she's almost certain they're dead.

The boys were last seen at their father's home in Morenci, near the Michigan-Ohio border. Tanner Skelton was 5, Alexander Skelton was 7 and Andrew Skelton was 9.

Dad John Skelton pleaded no contest to unlawful imprisonment and is serving 10 to 15 years in prison. He maintains he didn't harm his children.

The boys' disappearance led to a large search in Ohio and Michigan. Investigators say they're still following up on new tips.

Zuvers tells The Blade (http://bit.ly/1RuXwEC ) newspaper in Toledo, Ohio, she knows she'll be reunited with her boys in heaven.

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Information from: The Blade, http://www.toledoblade.com/