DETROIT (AP) – A Postal Service employee accused of taking more than $6,000 in bribes from a contractor is changing his not-guilty plea. A court filing Monday says Mancer Holmes is returning to federal court on Thursday, six weeks after he and four other men were charged with taking bribes to send mail vehicles to a Detroit garage for repairs. Holmes was lead automotive technician at the bulk mail center in Allen Park. He’s accused of accepting $200 to $300 per week from the head of Metro Diesel. Joe Fawaz cooperated with agents and even made recordings of his meetings with postal employees. Holmes is charged with conspiracy and bribery.