Serial killer Joanna Dennehy bragged she killed four people rather than the three she was jailed for

The killer, famously pictured with a huge knife while being hunted, is banged up in HMP Bronzefield, Surrey.

MURDERER Joanna Dennehy has bragged she killed four people rather than the three she was jailed for.

Dennehy, who carried out the Peterborough ditch murders in 2013, said her other victim was a man like the three she stabbed to death.

Sources said her boasts added to her aura of fear at HMP Bronzefield, Surrey.

An ex-lag said Dennehy, serving a whole-life tariff, leads a pampered existence and has a cell full of sick fan mail.

Dennehy, 35, has had flowers delivered and received gifts including an Armani watch and designer trainers.

She says most of her “fans” are men and revels in being as notorious as killers such as Rose West and Myra Hindley.

Dennehy, famously pictured with a huge knife while being hunted, has just left the jail’s segregation unit.

She has a Mohican haircut and has been working out.

Our source said: “Her boasts about the extra killing went round the prison.

"It has added to how scared people are of her.”

In March 2013, she lured him to a house with the promise of sex.

The sexual sadist ended up stabbing him five times, and he was left with a punctured heart and lungs.

Lee was found the next day in a Cambridgeshire ditch by a walker, his corpse clad in a dress.

Thanks to phone records between the pair, Dennehy was named a suspect by police and a nationwide manhunt was launched to track her down.

Mum Kathleen and husband Kevin were "devastated" to find out about the news.

Dennehy recruited an accomplice, Gary Stretch, 47, who she was said to have "cast a spell over".

Talking of how tattooed Dennehy had “beefed up”, the source added: “All the girls in there are terrified of her.”

Dennehy admitting murdering Lukasz Slaboszewski, Kevin Lee and John Chapman in a “killing for kicks” spree before dumping their bodies in ditches.

While on the run she stabbed two more men, who survived.

A Ministry of Justice source said it found “no evidence” of her boasts.

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