We are appealing for information to help trace a woman in connection with an assault investigation in Lancaster.
Around 2pm on August 27 a man allegedly rammed a woman with a bike and started attacking her on the cycle path next to Asda supermarket.
A woman, also walking on the cycle path, intervened, telling the man she would call police. The man then made off from the scene.
The witness offered to call police again, but the woman declined.
The man was later arrested and charged by police.
It is believed the member of the public had a foreign accent, possibly Canadian.
Officers want to trace her and are appealing for information in connection with the incident.
Det Con Ian Cartwright, of Lancaster CID, said: “We are keen to find this woman who we believe witnessed an assault.
“While we have limited information, we understand she intervened and offered to help.
“It is thought she had a foreign accent – possibly Canadian – and might be able to assist in our enquiries.
“If this was you, please get in touch as soon as possible.”
If you can help or you know the person described, please call (01524) 596463 or email email@example.com quoting log 0582 of September 16.
Alternatively, you can reach Crimestoppers anonymously on 0800 555 111 or online at crimestoppers-uk.org.
Robbie Kirk, 25, of no fixed abode, was charged with four offences of assault and remanded to appear at Preston Magistrates’ Court on September 20.