Boyfriend tried to kill heavily pregnant fiancée by stabbing her in the head before leaping through first-floor window

Petar Petrov tried to murder his pregnant fiancée (Photo: Met Police)

A brutal boyfriend tried to kill his eight-months pregnant fiancée by stabbing her in the face before slashing himself with a knife and hurling himself through a first-floor window.

Petar Petrov's 30-year-old victim remains in a persistent vegetative state following the vicious attack, which left her with multiple facial fractures and severely bruised lungs.

Doctors performed an emergency caesarean section to save the life of the couple's unborn child, who survived the premature birth.

Petrov, 31, from Edmonton, North London, today pleaded to the attempted murder of his fiancée on August 5 last year.

He was found in a pool of blood surrounded by shards of glass on the ground outside the couple's flat, which they had moved into a month earlier ahead of the birth of their baby.

The pair, who had met a year earlier working in a hotel in upmarket Knightsbridge, west London, had earlier been heard by neighbours loudly arguing for about an hour.

One local described hearing "a bang which sounded like a car crash" before Petrov was found lying bloodied unresponsive on the ground

The Bulgarian national had also suffered knife wounds and was initially thought to have been thrown through the window.

The man who found Petrov checked inside the flat and found the heavily pregnant victim lying on the floor with head and neck injuries.

She was taken to hospital fighting for her life and remains in a critical condition five months later. Her baby was born unharmed on August 9.

Detective Inspector Chris Skelt, of Enfield police's community safety unit, said: "It is incomprehensible to think that a father-to-be could carry out such a violent and horrific attack on his fiancé knowing she was carrying their baby.

"I would like to commend the members of the public who were first at this distressing scene, and who performed first aid on the injured parties and called the emergency services. Their quick actions and bravery were crucial in getting the victim the medical attention she needed, saving her child's life.

"Sadly she remains in a persistent vegetative state, however thankfully her child was born without injuries via caesarean section."

Petrov's injuries were found have been caused by plunging from height and self-inflicted knife wounds.

He was taken to the Royal London Hospital and later arrested. He was initially also charged with attempted child destruction.

Petrov will be sentenced at the Old Bailey on February 10.

DI Skelt said: "This has been a truly shocking case.

"Petrov has never revealed the motive behind his shocking attack but I urge anyone who is either in, or know a person in, a relationship suffering domestic abuse to report incidents to police in order that we can protect victims for further abuse and perpetrators can be brought to justice."