Graffiti taggers have spray-painted a wall bordering the city’s ancient Howff graveyard.
Vandals have “tagged” a pill box and wall on Barrack Street, causing an as yet unknown amount of damage to a piece of the city’s cultural heritage.
Dundee City Council has been made aware of the damage but it is too early to know whether parts of the wall targeted can be easily cleaned.
The defacing comes weeks after conservation experts at Arbroath Abbey said they were unable to remove graffiti from the 12th Century monument following a two-day vandalism spree in June.
In August, a headstone in the Howff was damaged, apparently by an amateur archaeologist.
Dundee Howff Conservation Group chairman Simon Goulding said it was too early to know how difficult it might be to remove the paint, but it would not simply be a case of using a power hose.
Parts of the western wall date back to the early 1600s, although it has been repaired and moved several times in its life.
Mr Goulding said: “It is never good when things of such historical importance are damaged, especially after one of the stones in the Howff was scratched earlier in the summer.
“The Howff is one of the city’s most historic monuments, and now it’s been damaged again.”