An inmate at the Wisconsin Secure Program Facility in Boscobel was sentenced to 7½ years in prison and 7½ years extended supervision on six charges of assault by prisoners as a repeat offender.

Willie C. Simpson, 45, was convicted of the charges after a Grant County Circuit Court jury trial April 8.

Simpson was accused of throwing a mixture of urine and feces at six WSPF guards July 15, 2011, as Simpson was being taken out of his cell for a medical exam, according to court records.

The sentence includes testing for HIV and other communicable diseases.

Simpson is serving a 25-year prison sentence after he was convicted of two counts of first-degree sexual assault of a child in 2000.

Simpson was sentenced to three years in prison and three years extended supervision on a charge of battery by prisoners in October. The charges also are from Simpson’s term at Boscobel. Simpson was found guilty in a jury trial in July. Circuit Judge Robert VanDeHey ordered that that sentence be served after Simpson’s sexual assault sentence.

On April 8, VanDeHey ordered that the assault sentence be served consecutively to his other sentences, which means Simpson will be in prison until at least 2035, when he will be 68.

Simpson also faces charges of battery by prisoners, felony bail jumping and disorderly conduct in Dodge County. He is being arraigned on those charges this week.