CCTV has caught a man apparently running straight through a shop window.
The man is caught on camera running across a road before either falling or tripping over.
He then breaks the glass when he ploughs through the front of Monsoon's in Hertford.
A member of staff at the clothing store, who did not want to be named, said: "We don't know what happened.
"My colleague just turned up Sunday morning and there was a big hole in the shop window.
"There was lots of blood and glass everywhere, forensics have been and taken samples."