Hosni Mubarak, Egypt's former president, has been detained along with his two powerful sons pending investigations into accusations of corruption and abuse of authority, the prosecutor general has said. Mubarak was taken to an intensive care unit after suffering heart problems when he was being questioned. Earlier on Tuesday, Mubarak had been questioned in hospital by prosecutors at the Red Sea town of Sharm el-Sheikh. Gamal, Mubarak's younger son, was a senior official in the ruling party and was widely seen as being groomed to succeed his father before popular protests brought down the regime. Al Jazeera's Zeina Khodr, reporting from Cairo, said that Mubarak's sons have already been questioned for two days at a courthouse near Sharm el-Sheikh and are expected to arrive in Cairo on Wednesday. At least 800 people are estimated to have been killed during the protests as police opened fire on the crowds.

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