Police have issued an appeal after a Preston landmark was vandalised during the weekend.
The roof of the Jeremiah Horrocks Observatory has been daubed in graffiti causing £2,000 to repair.
Lancashire Police say it happened between 4pm on Saturday 23 November and 4pm on Sunday 24 November.
It would appear that to gain entry to the secure site, the person or people responsible have climbed over a large metal fence and have then managed to climb up on to the roof of the building before causing the damage.
PC Berni Clark who is investigating the damage said: “The people responsible appear to have gone to some effort to cause the damage, at the same time putting themselves in danger and we are very keen to trace whoever did this.
“If anyone has any information at all that could help us to identify the people responsible then I would urge them to get in touch with us.”
Anybody with any information can contact police on 101 quoting log number LC-20131126-0691 or Crimestoppers anonymously on 0800 555 111 or on-line at Crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.