The Lahore High Court on Tuesday extended an order to the government asking to provide immediate medical facilities to nuclear scientist Dr Abdul Qadeer Khan, his lawyer said.

A Lahore High Court judge is revealed to have issued the order after Khan's counsel Syed Ali Zafar filed a string of complaints in court yesterday that the government had deprived the scientist of medical facilities and barred him from leaving his residence even to visit his brother who is critically ill in hospital.

He claims that he had been subjected with these security arrangements since his five-year house arrest for operating a nuclear proliferation network was lifted in February 2009.

The latest complaint was filed in the Lahore High Court after police and security agencies allegedly came into Khan's house and barred relatives, friends and doctors from visiting and denied him bottled water.

Khan's lawyer Ali Zafar told AFP, "Police came to his house on Saturday and he was barred from meeting anyone, even his family members and doctors and he was also forced to drink tap water".

Judge Chaudhry Ijaz summoned Pakistan's attorney general to appear in court on February 19 to explain the government's position on the issue, he added.

The court bench is also claimed to issue a notice to the Attorney General, asking him to file a response to Khan's complaint by February 19.