Thieves have broken into Bootham Crescent twice, stealing parts of the pitch, it was revealed today.
Items from inside the old York City ground have also been taken, including seating, alongside patches of turf which have been dug up and removed.
The stadium hosted its last game last year, before City played one game at the new LNER Community Stadium.
Thieves forced their way in through both the home and away end gates.
The club expressed its dismay at what has happened.
In a statement, York City FC said: “It is especially disappointing at a time the club is auctioning items to raise much needed funds for the club and is frustrating for management and players who are currently using the facility to train.
“The club is also due to start work on the careful and sensitive relocation of any ashes and urns which may be located under the pitch, an important process which will now be delayed due to the tampered surface.”
It said it has been forced to increase security at the ground, “an unnecessary cost during this difficult time for the club”.
Grounds staff are working to make the necessary repairs after the break ins.
“We request anyone with information about the break-ins to contact the club directly,” the statement said.
Contact details are available on the York City website.