Cairo (CNN) -- Egyptians exulted Wednesday over the detention of their ailing former president and his two sons in a probe exploring the killing of protesters in Cairo's Tahrir Square, the center of the country's dramatic uprising earlier this year. Former President Hosni Mubarak and his sons, Gamal and Alaa, were taken into 15-day detainment Tuesday in connection with the protesters' deaths, according to Ahmed Hemeida with the Justice Ministry. Mubarak has decried accusations of his responsibility in the deaths, saying the probe is aimed at tarnishing his reputation and that of his family. The detention and questioning of the former authoritarian leader is unprecedented in the modern Arab world.
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Mubarak and two sons are being held for questioning in the killing of protesters
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The questioning of Mubarak on corruption allegations already had begun, the military says
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Egyptian state television reports Mubarak had a heart attack
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Mubarak stepped down on February 11
A man who said he was the head doctor from a @placeholder team assisting with Mubarak's questioning said late Wednesday the former leader had heart palpitations and was able to walk with assistance.