Police said that it currently did not have full descriptions of the suspects but officers were conducting extensive inquiries to identify and locate them.
“Our investigation is in its early stages,” Matthews said.
“We are working at pace to develop our picture of the suspects, and we will share details as soon as we are able to.
“As part of our investigation, we would like to speak to anyone who was in the area between 2am and 4am and may have seen or spoken to a woman in her 20s in distress.”
Anyone with information is urged to contact police.
