Media Information 02/13/2007 Lancaster County Sheriff’s Investigators have been investigating the Sexual Assault of a Child that occurred in 1998, between a 14 year old boy and a relative at a residence in rural Roca, Nebraska. The victim, now 23 years of age reported in January he had been sexually assaulted by David A. London, age 59 of Roca Nebraska, over 8 years ago. Working in cooperation with the Lincoln Public Schools, London was arrested today at his place of employment, Lincoln High School, for First Degree Sexual Assault. There is no evidence indicating that the sexual assault occurred on school property. Follow-up is ongoing.