Police want to speak to this man in connection with a sexual offence incident on a bus travelling in the direction of Mansfield.
The incident happened at about 3.35pm on May 1 on a Black Cat Trent Barton bus.
Officers believe the man (pictured) has details which could help with the investigation.
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He got off the bus at Kelham Way, Eastwood stop in the direction of Mansfield.
Call 101 quoting incident number 623 of 1 May 2019.