SHIMLA: An earthquake of 3.2 magnitude rattled the Chamba region at 4.41am on Saturday, official sources said here.No casualty or loss to property was reported.The epicentre was located at a depth of 10km on the Himachal-Jammu and Kashmir border at 32.9 degrees North and 76.2 degrees.The region has been recording tremors of similar intensity over the past three days.