Police are appealing for witnesses who may have seen a suspected domestic assault in the early hours of Sunday morning.
Officers say the incident took place in the Haven Bank area of Boston and believe a female was assaulted by a man she was in compnay with.
The exact location is not clear but it is thought the couple were on a bridge at the time.
A man passing by at the time stopped and expressed concern for the woman. DC Gail Hurley would now like to trace that man.
If you were that man, orhave information about the incident, contact DC Hurley on 101 quoting incident 263 of September 29. Information can also be reported anonymously by contacting Crimestoppers on 0800 555 111.