A North Dakota man convicted of drugging a teenager and sexually assaulting her for several months has been sentenced to 20 years in prison.

A North Dakota man convicted of drugging a teenager and sexually assaulting her for several months has been sentenced to 20 years in prison.

Prosecutors say 38-year-old George Robert Lyons gave sleeping pills to a teenage girl once a week under the guise of needing to clean her ears from July 2009 and January 2010. The girl told Grand Forks District Judge John Thelen during a sentencing hearing Monday that all her relationships have been damaged and she is afraid Lyons will retaliate when he's released from prison.

Lyons' attorney is expected to appeal his conviction. Lyons planned on speaking during Monday's hearing but became emotional and said he was "at a loss for words."

Lyons has a pending court case in Polk County in Minnesota as well involving a case that prosecutors say involves circumstances similar to the North Dakota case.