Police are investigating a report that a 20 year-old woman was assaulted by three males in Lisburn.
The alleged attack took place at around 6.30pm on Monday September 9.
Police have appealed for a number of people who may have been in the area of the Lagan Towpath near Moors Bridge at the time to come forward.
A spokeswoman for the PSNI said: “Dtectives are keen to speak to a woman who was walking with a golden Labrador and accompanied by a young boy of approximately 15 years old who was on a bicycle; an elderly gentleman with grey hair and wearing tinted glasses and two male joggers who were both wearing neon jackets.
“These people were in the area at the time of the assault and Police would ask that they contact them as they may have information which could assist them with their enquiries.”
Anyone with information is urged to contact detectives at the Rape Crime Unit in Ladas Drive on 02890 700305.