Former Egyptian president Hosni Mubarak, in detention pending a probe into state violence against protesters, is reported to be in a stable condition after suffering a heart attack.The official MENA news agency said the 82-year-old former strongman's condition was stable and reassuring. Egyptian protesters who spearheaded the popular uprising that toppled Mubarak in February hailed his detention and that of his two sons as a positive step by the army.All three were placed under 15 days detention yesterday with Hosni Mubarak incarcerated in a hospital in the Red Sea resort of Sharm el-Sheikh, after suffering a heart attack during interrogation by prosecutors the previous day.