A Warren County High School custodian could go to jail for six years after she was charged Thursday with writing a bomb threat on a bathroom wall, forcing the evacuation of the school campus.Meanwhile, a nearly simultaneous copycat bomb threat at Warren County Middle School on Thursday has also been solved, declared the work of a mischievous WCMS eighth-grader.The custodian, Marlene Madewell, was being booked at press time Thursday night and was to be charged with felony filing a false report. She could face one to six years if convicted. She reportedly confessed to the crime during questioning Thursday and is believed to be a copycatter.