A man is alleged to have assaulted a 39-year-old woman in Lerwick.
Police Scotland said the alleged assault happened at around 9pm on Monday at Staney Hill Public Hall.
Inspector Sam Greshon of Lerwick police station said: “A number of witnesses have told us that a car drove past whilst the incident was ongoing, however we have been unable to trace the driver of that car, unfortunately we don’t have a make or model.
“I would appeal to the driver to come forward as you may have witnessed the incident or captured it on dash-cam.”
Anyone with information is asked to contact Police Scotland on 101 quoting incident 0720 of 19th October.”