THE Foreign Office has spoken of continuing concerns over the safety of a Scot shot on death row in Pakistan, as an investigation indicates he was attacked by a prison guard who was radicalised by an inmate.

Lawyers acting for Mohammad Asghar have called on Prime Minister David Cameron to act now to bring him home after reports of the official investigation into the shooting appeared in the Pakistani media.

Mr Asghar, from Edinburgh, was sentenced to death in January after being convicted of blasphemy for claiming to be a prophet of Islam.

The 70-year-old, who is said to suffer from paranoid schizophrenia, was shot and injured in Adiala prison in Rawalpindi last month.

Aamer Anwar, the family's solicitor, said repeated demands by the British Government and the British High Commission for the findings of the official inquiry into the shooting have been unsuccessful.

But reports in Pakistan indicate that the prison guard who shot Mr Asghar was incited to do so by Mumtaz Qadri, a ­policeman facing the death penalty for murdering Punjab governor Salmaan Taseer.

"The accused (the prison guard) was deployed outside the cell of Mumtaz Qadri during the incident and he had confessed to taking religious lessons from him," a jail official said.

The official's account of events was reportedly supported by three other prisoners, who said guards regularly took religious instruction from Qadri.

A Foreign Office spokesman said: "We are deeply concerned about the case of Mr Asghar, who was shot while on detention in prison in Pakistan. Consular officials continue to monitor his situation and are liaising with the hospital and prison authorities.

"We continue to work closely with the Pakistani government on this case. We have raised at the highest levels our desire that Mr Asghar's personal security is safeguarded, and that he is able to access the vital treatment that his medical condition requires, and that there is an urgent investigation into what happened.

"We have previously raised our concerns about his wider case, including through the former Foreign Secretary, and will continue to do so.

"It is crucial that concerns about Mr Asghar's safety and mental health are addressed and also taken into consideration during his appeal, and that his documented history of mental illness is taken into account."

Mr Anwar said: "Every minute that Mr Asghar spends in Pakistan jeopardises his life as well as those seeking his release.

"The PM must act now and the Foreign and Commonwealth Office needs to stop trying to silence the Asghar family and concentrate on bringing Mr Asghar home."

On October 17 Mr Asghar's daughter, Jasmine Rana, travelled from Edinburgh to present a 70,000-signature petition to ­Downing Street calling for Mr Cameron to intervene in her father's case.

It is understood that Mr Cameron has spoken to his ­counterpart in Pakistan and raised the issue.