West Yorkshire Police say the man was later seen riding his bike naked below the waist.
Police are liaising with Holmfirth High School and Kirklees College after students were kept inside.
The constructed language is nearing 140 years old, with its annual UK conference currently taking place.
Yorkshire Water say they are creating new habitats to encourage the endangered rodents.
Claudine Binns, 51, is on trial at Bradford Crown Court charged with assault by penetration.
Sir Roy Clarke says the classic BBC comedy "probably wouldn't be made these days".
Police are appealing for witnesses following the death of 19-year-old Ashton Tomes in Holmfirth.
Across Yorkshire, people are doing amazing things every week - find out more about them here.
Three vehicles are believed to have been involved in the crash on Wednesday night in Holmfirth.
