TWO members of Oxford University staff were injured by an “out-of-control” student celebrating the end of exams.

The officials were said to have received bruised ribs and a black eye after the ‘trashing’ incident in Merton Street. Students often spray each other’s gowns with food and Champagne after their finals.

In an email to heads of colleges, proctors Huw Dorkins and Amy Zavatsky said: “Two members of our staff were injured by an out-of-control man thought to be a student who was ‘celebrating’ with one of the finalists.

“The man in question ran away from the scene. The proctors are currently investigating this case, which may become a matter for the police.”

In an email to students, the proctors wrote: “There is no tradition of the abuse of food in ‘trashing’. The very idea is a recent invention.”

A university spokesman said: “Obviously engaging in behaviour that risks or causes injury to others is totally unacceptable.”