A Weymouth mother is urging parents and students to be vigilant of thieves after another bike was taken.

Mary Walden and son Niall Collins, 18, live in Littlemoor Road, Weymouth, and last week Niall’s bike was stolen from Weymouth College.

The rare baby blue dirt bike was chained up but it is believed that bike thieves used bolt cutters to steal it.

Mrs Walden reported the incident to the police and officers are investigating.

She is calling for parents to make a note of serial numbers so that it’s easier for crimes to be reported and traced.

Mrs Walden said: “It’s a lot of money and I think that parents should be made aware of what’s going on and maybe think about getting a bolt cutter-proof lock for these bikes.

“Niall is absolutely devastated. He rides to college but it’s also his hobby and his life, he goes dirt biking with his friends at the weekends.”

Niall said: “To be honest I’m just really annoyed. There are no others words for it.

“At first when I noticed the bike had gone I was in disbelief before I was angry.

“I looked further down the bike park and then I found the chain that had been cut with the bolt cutters.

“That was when I started to get really angry.”

He added: “I don’t think I will get the bike back.

“I think it will be stripped down, whoever took it will change the parts, paint it and sell it on.

“They will probably grind the serial number off.

“I have been telling my mates to be really careful and get stronger locks.”

Dorset police said they are still investigating the bike thefts and are urging people to report any thefts or information to them.

The report comes after the Echo revealed that on average one bike a day is being stolen across the borough.

An organised gang is believed to be behind the thefts, often striking in broad daylight and in busy areas.

New bike shelters with CCTV have recently been constructed at Weymouth College.

Sally Butters, spokesman for Weymouth College, said: “They are covered and have CCTV and extra lighting on them and we have a full-time security guard during the day.

“The bike thefts have been where people have got in with bolt cutters and got straight out again so unless someone is looking at the CCTV all the time it's very difficult to stop it.”

Witnesses and anyone with information should call Dorset police on 01305 222222.