THIEVES stole a large amount of stone from an equestrian centre on Saturday night.
More than 17 yards of the material was taken from a wall at Pennine Riding Club, Parkin Lane, Todmorden, at about 8pm.
In an attempt to prevent further incidents, staff have painted a white line across the remaining stonework at the club to deter thieves.
Inspector Allan Raw, of the Upper Valley Neighbourhood Policing Team, said: “These stones are taken because of the high value they attract and if you see someone acting suspiciously then please call the police.
“If you see someone, especially late at night or early in the morning and irrespective of marks on their clothing or van, piling up stones then please make a note of their vehicle registration and report it to us.
“Officers on patrol in the neighbourhood are keeping a keen eye out for those responsible, but we need the public to be our eyes and ears and report suspicious activity.”
Anyone with information is asked to contact police on 0845 6060606, or contact CrimeStoppers anonymously on 0800 555111.