THE mother of murdered Hampshire woman Joanna Yeates has called for people who knew her to be DNA tested, a month after her daughter went missing.

Speaking from her home in Ampfield, Theresa Yeates, 58, appealed for Jo’s friends and work colleagues to be eliminated from the police’s hunt for the killer.

She said that people living in the Clifton area of Bristol, where Jo lived, should also be tested.

Mrs Yeates said she did not believe any of Jo’s work colleagues were involved in her death.

She said: “I haven’t met all of them but that is my gut feeling. It is better to eliminate them [from the inquiry].”

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Mrs Yeates also confirmed that she would not take on the role of her daughter in a Crimewatch reconstruction, to be shown on the BBC later this month.

It is believed either an actress or Avon and Somerset policewoman will play the part.

Meanwhile, officers have been searching a second area near where Jo’s strangled body was found dumped on Christmas Day.

A team of around 12 was seen combing undergrowth in Providence Lane, near to Longwood Lane, Failand, where Jo was found dead.

It is thought they were searching for the ski sock missing from Jo’s body when she was discovered.

Detectives have also seized more CCTV footage, which could provide a breakthrough in the investigation.

Recordings taken from two cameras on a private house, which is less than 100 yards from where Jo lived, could have captured the final steps of Jo’s walk home.

The 24-hour CCTV cameras are fixed to an end of terrace house belonging to world-renowned maths professor Sir John Kingman, who has handed a number of tapes to police.

Jo went missing on December 17 after walking home from the Ram pub in Bristol, where she had been having drinks with colleagues.

The tapes could provide clues as to whether or not she was followed back to the basement flat where she lived in Canynge Road.