A Pakistani woman was allegedly 'raped for hours' during surgery for anal fistula at one of the country's leading hospitals.

The 35-year-old woman was admitted at Services Hospital in Lahore on Friday where she underwent the procedure and was discharged later in the evening.

But after regaining consciousness following the surgery, the woman claimed she realised she had been assaulted and reported the matter to police.

The woman was allegedly raped while undergoing an eight-hour procedure at a hospital in Lahore, Pakistan (pictured)

A report filed by Lahore's police contained a witness statement in which the woman claimed she was raped during the eight-hour operation.

'I was admitted to the hospital for a surgery on November 24,' the report read.

'When I regained consciousness from the anesthesia that night, I realised I had been assaulted during the surgery.

'It was an 8-hour-long operation but they discharged me from the hospital the same day,' the woman told the police.

The Services Hospital in Lahore (pictured) is one of the regional capital's leading medical institutions

She later started complaining about pain and bleeding from urinary tract. She said her sister took her to Sheikh Zayed Hospital where it was confirmed she had been raped.

'As her pain increased at night, the woman was taken to Sheikh Zayed Hospital where it was found that she had been allegedly raped,' the police report added.

Punjab Health Minister Dr Yasmin Rashid on Monday formed a three-member inquiry committee to probe the alleged rape.

DNA samples have been collected from the woman and the investigation is said to be ongoing.

The Office of the Medical Superintendent for Services Hospital Lahore said in a statement: `According to the medicolegal examination report, no physical signs of sexual assault or rape were observed by the medical board. However, on the request of the complainant, two external vaginal swabs for DNA/semen analysis were taken and handed over to the police for forensic analysis.'