Police have carried out checks in the centre of Ipswich a week after two men violently raped a woman.
The victim, in her late 20s, was left unconscious after the "despicable, sustained sexual attack" in an car park near Rope Walk.
Police returned to the Rope Walk area between 02:45 and 04:00 GMT and spoke to people about the attack.
On Friday, police released more CCTV footage of two men that they want to trace in connection with the incident.
Suffolk Police said the woman had been left traumatised.
Officers are also trying to trace two women who are believed to have had an altercation with the men inside Bowman's Bar in Falcon Street earlier that night.
Det Supt Eamonn Bridger, who is leading the investigation, said: "There has been a good response from the community of Ipswich and a clear intent to help the police.
"Information provided to us by the local community is vital in this inquiry, as any piece of intelligence, however small it may seem, could prove to be crucial in our efforts to identify who is responsible for this horrific crime."
There will be increased police patrols in the town centre.