Animal rights activists have targeted a plumbers' firm in a dispute over Oxford University's animal testing laboratory.
The Animal Liberation Front (ALF) claimed responsibility for spraying "Drop Oxford Uni" on shutters at Steve Rusk Plumbers, Wootton Road Industrial Estate, on an American website.
The ALF - which opposes the animal testing laboratory in South Parks Road - said it carried out the attack because the firm has been working for Oxford University.
A police spokesman said the attack happened overnight on Tuesday, April 15, and anyone with information should contact officers on 08458 505 505 or speak anonymously to Crimestoppers on 0800 555 111.
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