Four bikes belonging to students at Priory Ruskin Academy have been stolen during a school sports day in Grantham.
The bikes were taken on Friday after they were left outside the South Kesteven Sports Stadium where the sports day was taking place.
Amanda Brunton said her son, Declan, 14, was upset by the theft of his bike, a Carrera mountain bike, as it had been a Christmas present.
Mrs Brunton, of Harris Way, Grantham, said: “My son’s bike was locked up outside the stadium but they have cut through the lock. The bike was just five metres from the turnstiles.
“It was a Christmas present, but he has only been able to use it for a month and a half as he had broken his ankle. They break up on Friday so he will have no way of getting about in the summer.
“There is CCTV only 30m from there. There are so many cameras up there. Somebody must have seen something.”
Justine Gibson said her 15-year-old son Jake’s bike was also stolen. She said: “His bike was chained together with his friend Greg’s to the bike rack, and they cut threw it and took both bikes. There was a CCTV van next to the bikes and a camera on the building but not heard yet if there was any useful footage.”
Four bikes were stolen between 8am and 3.30pm on Friday. The thieves tried to steal a fifth. Police say one of bikes was a red/orange carrera which was locked up but the lock was removed. Another, a yellow carrera racing bike was not locked up.
Anyone with information is asked to call 101, quoting incident number 292 of Friday, July 7.