NEW : Apparent military effort to reopen Tahrir Square is rebuffed . The Egyptian army has been trying for days to regain control of the square, which was cleared by protesters on January 25 after nearly three weeks in a state of siege. When Mubarak leaves , they will leave , the protesters say . The Tahrir Square protesters form a human chain to block tanks from entering . ` He is still talking to doctors at the clinic , '' Haviv said . Scuffles broke out when soldiers knocked down some barricades , a witness says .
NEW : Apparent military effort to reopen Tahrir Square is rebuffed . The Egyptian army has been trying for days to regain control of the square, which was cleared by protesters on January 25 after nearly three weeks in a state of siege. When Mubarak leaves , they will leave , the protesters say . The Tahrir Square protesters form a human chain to block tanks from entering . Scuffles broke out when soldiers knocked down some barricades , a witness says .