Police are investigating reports a man indecently exposed himself to a woman on a street then harassed her.
Greater Manchester Police said in a statement there could be further victims and witnesses to what happened in north Manchester early on Wednesday morning.
A 54 year-old man, meanwhile, has been arrested.
In a statement, police said he remained in custody for questioning.
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It happened at around 7.50am on Ashton New Road, near Clayton Lane, said police.
In a statement issued on Thursday, GMP Manchester North said: "We are appealing for witnesses or anyone with information following an incident in north Manchester, at around 7.50am on Wednesday 13 August, where it is alleged a m