Vandals have targeted Rangers owner Craig Whyte's Highland castle.

The walls of the 14th century fortress at Grantown on Spey were daubed in graffiti with the words "Celic 1888. We shall not be moved".

On Tuesday the castle caretaker could be seen trying to remove the messy graffiti, thought to have been sprayed overnight.

Northern Constabulary are not investigating the vandalism, which has not been officially reported to police.

A spokesman said: "No one from the property has reported the damage, so there is no inquiry ongoing."

The Rangers owner is thought to be holed up at the Highland castle as problems continue to pile up for his crisis-hit club which is in the process of administration.

Whyte bought the Highland castle in 2006 and spent £5m in a two-year restoration project.

More About Focus on Rangers

• Scottish FA board to consider Rangers 'no links with Craig Whyte' findings
• Rangers talks continue over meeting to remove Malcolm Murray
• Ex-Rangers chief Charles Green agrees to sell shares to hedge fund
• Rangers signings can't play as trialists if league reconstruction approved
• Strachan: Walter Smith the man to get Rangers challenging Celtic again
• Walter Smith new chairman of Rangers as Malcolm Murray stands down
• Rangers inquiry finds 'no evidence' of Craig Whyte link with newco