The North end of Zanesville and Muskingum County is in the dark. American Electric Power says at 10:59 Wednesday morning a problem developed with two transmission lines and knocked out service to almost 7000 customers. As of 12:30 pm A-E-P is now reoporting that only 5256 customers are without service. No word on why it happened or when service will be restored. The Zanesville Police Department says traffic light are not operational and motorist should use exptreme caution when traveling Maple Avenue and any side streets.