Detectives investigating a sexual assault in Alderley Edge are appealing for three witnesses to come forward.
Shortly after midnight on Friday 8th October a 21-year-old woman was at The Edge when she engaged in conversation with a man.
The man is then reported to have sexually assaulted her.
Three men were walking through the area at the time and this caused the man to run away.
The victim also left and reported the incident to police.
As part of ongoing enquiries a 34-year-old man from Wilmslow has been arrested in connection with the incident. He is currently in police custody being questioned by detectives.
Officers are directly appealing to the three men who were walking nearby at the time. The men spoke to the victim and walked her to her car. Police are appealing to the men to come forward.
Detective Inspector Duncan Gouck, of Macclesfield Local Policing Unit, said: "The investigation is in its early stages and we are progressing numerous lines of enquiry. I want to reassure the local community that we are doing everything we can to establish the full circumstances of what has happened.
"As part of those enquiries we believe three men were in the park who spoke to the victim and may have information that could assist with the investigation.
"I would encourage them to contact police as soon as possible by calling Cheshire Constabulary on 101 and quoting IML 1102571.
"The same goes to anyone else who may have information relating to the incident."
Information can also be provided anonymously by calling Crimestoppers on 0800 555 111.