Guernsey Police said it happened at approximately 14:50 yesterday.
That would have coincided with the end of the Primary School day with infants leaving lessons at 14:40 and juniors at 14:50. The High School day ends at 15:05.
The alleged victim is an adult female, and a spokesperson for Guernsey Police said officers are investigating.
“If you have any information regarding the incident you are asked to contact Guernsey Police on 222222 quoting Reference Number OC25*145 or to contact Crimestoppers anonymously on 0800 555 111,” they said.
Pictured top: File image.