A glamorous local Russian MP and her husband - both semi-naked on the back seat of their Toyota RAV4 - died when a bomb exploded in the vehicle.

The face of Oksana Bobrovskaya, 30, who was in Vladimir Putin's United Russia Party, was ripped off in the blast in Siberia's largest city, Novosibirsk.

While she and husband Nikita appeared to be having a late-night romp when the car exploded in temperatures of minus 6C near her office, police fear the husband may have detonated the explosives in a fit of jealousy.

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Russian MP Oksana Bobrovskaya (above) and her husband Nikita - both semi-naked on the back seat of their Toyota RAV4 - died when a bomb exploded in the vehicle

The face of the 30-year-old politician, who was in Vladimir Putin's United Russia Party, was ripped off in the blast in Siberia's largest city, Novosibirsk

Eyewitnesses who rushed to the scene said that when the bodies were removed from the car, both the MP and her husband were 'naked below the belt'. Above, the couple with their four-year-old daughter

Police sources alleged the couple has rowed before the fatal incident and he had accused her of 'cheating' on him with a wealthy lover.

Eyewitnesses who rushed to the scene said that when the bodies were removed from the car, both the MP and her husband were 'naked below the belt'.

They said the bodies were in the rear seat of the car. The couple had a four-year-old daughter.

'There is a version that he held in his hands a kind of grenade, or a piece of TNT,' said a police source, according to The Siberian Times.

The couple 'had a conflict' during which 'the explosives detonated. Their faces are disfigured', reported another Russian newspaper.

There were also claims that a bomb was planted in the car with the husband as the sole intended victim.

Bobrovskaya was an MP in the Novosibirsk regional legislature but also worked as deputy general director of a major construction company

There have been claims that a bomb was planted in the car with the husband as the sole intended victim

'We are checking all the versions, including this,' said a law enforcement source.

But Novosibirsk mayor Anatoly Lokot said that the death of the MP was due to family problems.

'This was not a terrorist act,' he said.

Evgenia Romanova, an eyewitness, who lives in an apartment block overlooking the car park where the couple died, said: 'First there was an explosion.

'The security alarms on neighbouring cars started to scream, and I joked to my husband that the war with Turkey must have begun.

'And then I looked out of the window and saw all this carnage. My husband went down to the street, and I looked through the window.

Novosibirsk mayor Anatoly Lokot said that the death of the MP was due to family problems

'It was horrific - something you would not wish anyone to see. No heads, glass covered in blood ... a nightmare.'

The female MP's face was 'almost not visible' after the blast, said another witness.

'There was almost no head,' she said.

Bobrovskaya was an MP in the Novosibirsk regional legislature but also worked as deputy general director of a major construction company.

She and her husband died close to the company's office.

Her husband - believed to be in his early 30s - was a former special services officer in the Russian military.

There were claims today that 'their relations were strained because her husband Nikita Bobrovsky was out of work, leaving her as the sole breadwinner'.

Major news outlet LifeNews later reported that an anonymous police source said forensic evidence indicated that the couple did have sex before the explosion.