A "MINDLESS" act of vandalism was carried out at a sacred Somerset religious site this week.

Overnight on Thursday, a hole was dug within the grounds of Glastonbury Abbey, near to the spot King Arthur and Queen Guinevere's tomb is believed to have been discovered.

A spokesperson for the abbey, said: "It is a criminal offence to destroy or damage a scheduled monument either intentionally or through recklessness.

"At some point prior to 10.45am this morning (July 8) a person or persons has vandalised the high altar within the great church ruin of Glastonbury Abbey.

"A significant hole has been dug in the area and the high altar is currently behind pedestrian barriers while investigation and assessment are underway.

"As a scheduled monument any damage to the grounds or ruins is liable for prosecution and we remind everyone that digging within the grounds, climbing on the ruins or removing parts of the ruin can be prosecuted as a criminal act.

"We regret any interruption to your visit caused by this mindless act."

The hole has since been filled in but the area remains closed off to the public, and staff have asked visitors to report any "unacceptable behaviour".

A police spokesperson said the incident is believed to have occurred between the evening of Wednesday, July 7 and 7.45am on Thursday, July 8.