A man jumped out from between two cars and exposed himself to a woman in Horfield.
Police are appealing for information following the incident on January 27 between 6pm and 6.15pm.
The victim – a woman in her 20s – was walking along Toronto Road towards the A38 when a man jumped out between two parked cars, pulled his trousers down and exposed himself.
The victim then ran away.
The suspect is described as a white man, about 6ft tall of large build. His face was partially obscured from his nose down. He was wearing a green parka-style jacket with a hooded top with fur around and grey tracksuit bottoms.
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A spokesperson for Avon and Somerset Constabulary said: "We believe there may have been similar incidents in this road or nearby over the past year.
"We’re keen to hear from anyone who was in the area at the time who may have information to help our enquiries.
"If you think you can help, please contact us, quoting reference 5220020716."
