A Newtown mum has asked the public to be on the lookout after heartless thieves stole a brand new bike her 12 year old daughter had been given for Christmas.

Jayne Ralph, who lives in the Treowen area of Newtown said the bike had been left in a secure area of her back garden on Boxing Day but her daughter woke up the next day to find it gone.

"I've lived at this property for 20 years and nothing like this has ever happened, we've never had anyone take anything. We're all absolutely devastated, it was her main present.

"We're just doing all we can and hopefully the person will return it."

The bike is a turquoise 17" Apollo Entice. Anyone with information should call Newtown police station on 101.