Burglars stole six computers in a raid at a school.
The break-in happened at Ossett Academy and Sixth Form College between 6.20pm and 9pm on Wednesday, November 18.
Police said the gang unscrewed a wooden board on a window which had been smashed in a previous incident and stole six Apple computers.
Anyone with any information, or who saw anything suspicious around the Storrs Hill Road area on Wednesday, should contact police on 101.
Alternatively, call Crimestoppers, anonymously, on 0800 555 111.