A key witness in the trial of a ruthless torture gang has plunged to her death from high-rise flats in Bradford.

Detectives launched an investigation after Lisa Galloway fell from a window of her sixth storey home at Windsor Court in Swarland Grove last Saturday.

Miss Galloway - who helped jail the six thugs for a total of 91 years - is thought to have climbed out onto a window ledge of the property off Manchester Road some time after 8pm last Saturday.

A short while later the 37-year-old plummeted to the ground and despite desperate attempts to save her, she was pronounced dead at the scene.

Miss Galloway was one of three people kidnapped and tortured by a ruthless drugs gang after £250,000 of heroin was stolen from Bradford importer Waheed Akhtar.

Akhtar - known by colleagues as the Colonel - assembled a team of cronies to round up and interrogate the trio who he suspected of taking the haul from the boot of his car.

Miss Galloway was bundled into a car and driven to a house in Burnley where she was forced to take drugs and drink alcohol before being stripped, beaten and questioned.

She was later taken to a warehouse Akhtar rented at Try Mills in Thornton Road, Bradford, along with the other 'suspects' Daniel Francis and Naveed Younis.

One of the gang, Sagir Alam, immediately hit Miss Galloway with a heavy metal wheel brace, the force of the blow causing it to bend.

The trio were then tied to chairs and subjected to a horrendous sequence of beatings and questioning which lasted for at least six hours.

In August Miss Galloway gave evidence against Akhtar and the rest of his gang at Bradford Crown Court, resulting in them being sentenced to a total of 91 years in jail.

But just two months later she fell her death from a window of her flat off Manchester Road.

A spokesman for the Bradford Coroner's office said: "Miss Galloway was certified dead at the scene at 8.40pm on October 10.

"A thorough police investigation has been carried out and the incident is not being treated as suspicious."

He said that an inquest into her death would be held later this week.