Suffolk Police are appealing for witnesses following an incident which took place in Nicholas Everitt Park in Oulton Broad.
Officers want to hear from anyone who stopped to speak with a lone female as she sat near to the museum in the park at around 10pm on Friday 19th July.
They also ask if anyone heard her call out or noticed her with a man, thought to have been carrying a motorcycle helmet, at around 9.30pm.
If you can help the investigation please contact Suffolk Police, quoting investigation 37/40778/24.