They said the deer was found with deep neck injuries at Kollipatti village and felt it might have been hit by a speeding vehicle or mauled to death by street dogs when it came out from the jungles in search of water.
Revenue officials said four spotted deer had died within a month on the stretch when they came in search of water.
They said it was not clear if the forest department had been given any funds for providing water facility to the deer in the forest area itself or not.