This is from the Derbyshire Times newspaper from England, published last year.
Mystery strikes Ashbourne, a whole town has gone missing. During the town’s annual mischief night celebrations, an unknown set of events took place that has led to the disappearance of all 700 of the town’s residents along with an unknown amount of visitors. Signs of a riot were found, along with one survivor, an American. Police will not reveal any more details since this is an active investigation. This one photo was found on an abandoned phone near the town.