Dr Abdul Qadeer Khan has been taken to hospital with a heart problem, the government said on Thursday. Doctors have suggested that Dr Khan undergo angioplasty within a few days, a private news channel reported. Federal Information Minister Sheikh Rashid Ahmed said Dr Khan had been provided all necessary medical facilities and was under the continuous observation of doctors. "He has had some heart pressure ... and he may have angioplasty surgery in the next two or three days," Reuters quoted Sheikh Rashid Ahmed as saying. Khan was taken from his Islamabad home to a military hospital in Rawalpindi after developing heart problems on Wednesday, according to an official source, who wished to remain anonymous. The scientist had been suffering from stress and was receiving treatment for hypertension, the source said.