Police have received more than 30 calls after a fresh appeal for information about the unsolved murder of schoolgirl Milly Dowler.

A renewed appeal was launched on Monday after prime suspect Levi Bellfield was convicted of murdering two young women after stalking them at bus stops.

Detectives said a number of calls had the potential to be significant.

Police also want help in tracing a red Daewoo Nexia car seen in CCTV footage taken in Walton on the day Milly went missing on March 21, 2002.

The registration number N503 GLT and chassis number KLATF68V1SB554108 are being released for the first time.

The vehicle has not been seen since it was reported stolen from a pub car park in Hounslow several days after Milly disappeared.

Former nightclub bouncer and clamper Bellfield was interviewed over Milly's death three years ago, and a car of the same colour and model was owned by his then girlfriend.

She also lived in a rented ground-floor flat close to where Milly was last seen.

A Surrey Police spokeswoman said: "Detectives have been investigating Bellfield and the end of his recent trial for offences in London has provided new opportunities for us to explore areas that we had previously been unable to."

A reward of £50,000 is on offer for information that leads to Milly's killer.

Anyone with information should call the dedicated appeal number 01483 637637.