Two children have allegedly been assaulted at the St Peter Port bus terminus.
Police say it happened at around 5:25pm on Tuesday 31 May.
Officers want to speak to anyone who saw what happened.
The force also wants people in the South Esplanade and bus terminus area with CCTV to come forward.
Anyone with information is asked to call PC55 Le Bachelet on 222 222 or Crimestoppers anonymously on 0800 555 111.
Guernsey charities launch awareness campaign #WithoutUs
The Association of Guernsey Charities wants islanders to understand the consequences of losing their services, as the sector faces challenges.
Meet 'Angus' who has hitchhiked from the USA to Guernsey
Guernsey's Animal Shelter is looking after a large black beetle after a local family ordered a toy online and found a surprise in it.
Guernsey primary school hours adjusted
From the beginning of the next academic year, all 12 of the Bailiwick's primary schools will operate for six hours and 15 minutes a day.
Sanitary bins are being put in men's toilets across Guernsey
Male Uprising Guernsey (MUG) hopes putting sanitary bins in men's toilets will enable more men with incontinence to confidently continue their everyday lives.
Fourth electric bus trial begins in Guernsey
The Higer STEED XL will be on Guernsey's roads for the next couple of weeks.
WATCH: Barfleur's trial docking in Guernsey a success
Brittany Ferries completes its CI berthing trials by coming alongside in St Peter Port without a hitch.
Texas and Tom Grennan to headline Weekender in a new location
Texas and Tom Grennan are coming to Jersey for this year's Weekender Festival, which has a new location.
Crew of plane that overshot runway had landed in Guernsey many times
Aurigny's CEO confirms the Luxwing pilot and first officer had landed into Guernsey "I would guess approximately four to six times a day, for the past 20 days."
