Three members of staff at the University of Warwick escaped serious damage to their health when a prankster added cleaning fluid to milk in a refrigerator.

The staff members in the Social Studies building had made their morning coffee when they noticed an unusual taste.

On investigation it was found that cleaning fluid had been added to one partly used carton of milk. The matter is in the hands of the police.

A university spokesman said:

"Coincidentally two individuals were apprehended by our security staff the previous day in the Social Studies building. They had been moving furniture around inside several rooms.

"They are not part of the university and were handed over to the police. I cannot say whether the two incidents are linked."