COPS were last night examining CCTV footage from a bridge in a bid to solve the mystery death of Joanna Yeates - feared murdered by a kidnapper.

Thirty-two cameras scan Bristol's Clifton Suspension Bridge to deter jumpers at the notorious suicide spot.

Detectives hope film will show the last journey of Jo, 25, identified yesterday as the frozen body found on the other side of the bridge from her home.

They want to discover if she was driven across or walked over the famous Brunel-designed structure spanning the Avon Gorge.

Her abductor may also be spotted.

The footage may also help cops determine WHEN Jo's body was left on the edge of a golf course in Failand, Somerset, three miles from her Clifton home.

A police source said last night: "It's likely to be a needle in a haystack but the CCTV from the bridge could provide invaluable clues. It could tell us when Joanna went over the bridge, how she went over, who - if anyone - she was with and whether she was alive or not."

Family: Now tell us how Jo died

THE grief-stricken parents of Joanna Yeates will find out today HOW she died.

Pathologists began a post-mortem examination on the 25-year-old landscape architect yesterday.

But the grim task could not be completed because her body was found frozen in snow amid temperatures of -10°C.

Police yesterday confirmed the corpse - found by dog walkers on Christmas Day - was that of Joanna.

They are thought to have become satisfied it was her by her clothing, though members of her family still face the harrowing task of officially identifying her.

A team of detectives broke the news to Joanna's tormented parents David and Theresa, brother Chris and boyfriend Greg Reardon.

A police source said: "It was a heartbreaking job but Joanna's parents have been incredibly brave throughout this. They cried for their daughter but they know they have to be strong for Joanna. They want her killer caught."

Cops have declared Joanna's death "suspicious" but have yet to formally launch a murder investigation.

They will do so immediately if the post-mortem shows she was killed.

A team of 70 was already on the case last night.

An Avon and Somerset police spokesman said: "We are satisfied the body is Joanna Yeates.

"But this is pending the results of a post-mortem which are not expected for at least 24 hours due to the nature of how she was found in such extreme conditions."

Blonde Joanna is thought to have been abducted from her flat in Clifton, Bristol, on December 17.

She was found three miles away in a lane by a golf course near the village of Failand, on the other side of the famous Clifton Suspension Bridge.

IT worker David, 63, and Theresa, 58, had been due to entertain Joanna and fellow architect Greg, 27, over the Christmas weekend at their home in Ampfield, Hants.

Before police revealed the body was Joanna, distraught David said: "In truth we feel like we would be relieved if it was her.

"We don't want to go to our graves wondering where she is and not being given the chance to say goodbye to her.

"We assume that she's dead so we'd like to say goodbye. Our lives have gone. It hasn't been a Christmas for us." Chief Superintendent Jon Stratford, in charge of the case, said: "Our heartfelt condolences go out to Joanna's family for their loss.

We have not stopped working hard throughout the Christmas period to find their daughter after she was reported missing. Now we will work just as hard to discover exactly what happened to her."

Messages on Facebook and Twitter begging cops to find Joanna switched to tributes yesterday after it became clear she was dead.

Bec Wood wrote: "Rest In Peace Jo. You will always be loved and remembered for being so beautiful, kind, successful and lovely. You made Greg so happy. Our thoughts are with Greg, your parents and all of your families and friends. We will miss you Jo."

Michael Whitcher added: "Rest in peace little Jo. My heart and thoughts go out to your family and I am thankful I knew you."

Joanna was reported missing by Greg eight days ago after he returned home from a weekend visit to his brother Francis, 33, in Sheffield.

The couple were due to have been joined by Greg's parents John and Lydia. But they were snowed in at their home in Ilfracombe, Devon.

Police have "routinely" taken away Greg's phone and laptop for examination.

Joanna's death is one of the most baffling mysteries of recent times. She joined colleagues in The Ram pub in Bristol's Park Street for after-work drinks on December 17.

During the 20-minute walk to the rented flat she shared with Greg, she bought a £4.50 mozzarella, tomato and basil pizza from a Tesco Express store.

On the way she phoned pal Rebecca Scott to arrange a Christmas Eve drink.

After that, Greg's calls and texts from Sheffield went unanswered and he returned home to find the pair's pet cat had not been fed or let out.

There was no sign of a break-in. And Jo's coat, bag, purse, keys and mobile were inside. Greg reported her missing four hours later.

The receipt for the pizza was in the flat but there was no sign of the food or its packaging.

Joanna's parents made two tearful TV appeals for information. And Greg revealed he saw her as his "future".

David said that when he visited the flat, he quickly became certain Joanna had been abducted, though police asked him not to go into detail.

He added: "We knew what the flat was like. We know what it's normally like. We know what she does and doesn't do. We were 100 per cent convinced within 30 minutes of arriving at the flat that she had been abducted.

"We had grave concerns based on what was in the flat. We knew she had not gone of her own volition. We came to the conclusion it was very unlikely she would be found alive."