A former employee of Lincoln Public Schools faces charges of sexually assaulting four boys. At least one of them was allegedly assaulted at a church where Benjamin Truksa had been choir director.

Truksa was charged in Lancaster County Court with two counts of first-degree sexual assault of a child and two counts of sexual assault of a child.

The 27-year-old is accused of assaulting four boys -- now ages 16 to 22 -- between January 1996 and March 2006 at Indian Hills Community Church and elsewhere.

Authorities say Truksa was fired from his position at the church in November 2005 for looking at pornography on his church computer.

He had previously worked at Irving Middle School as a piano accompanist.

Truksa is being held on a $500,000 percentage bond.