A 26-year-old man has been arrested following a serious sexual assault, in Beech Street, Huddersfield, during the early hours of Saturday morning.
The man arrested remains in custody and enquiries are on-going.
The 21-year-old victim is currently being supported by specially trained officers and a scene remains in place following the 3am incident.
Detective Sergeant Dennise Bell, of Kirklees District Safeguarding Unit, said: "We are appealing to anyone who was in the area at this time and who may have heard or seen anything suspicious to get in touch."
Anyone who was in the area and has any information is asked to come forward and speak to officers via 101.
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