A man was seen by several people walking along a street while naked from the waist down.
Police say the indecent exposure happened in Cravells Road in Harpenden between 9.15am and 10am on Thursday May 12.
PC C-Jay Callaghan, who is investigating, said: “Understandably, this was an extremely unpleasant experience for the victims. The man was walking along a public road, so it is likely many more people witnessed the incident.
“If you have any information which may assist on ongoing enquiries, please contact police.”
Anyone with information is asked to email c-jay.callaghan@herts.police.uk or call 101, quoting crime reference 41/37410/22.
Alternatively, contact Crimestoppers anonymously on 0800 555 111 or via crimestoppers-uk.org.
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