NEW : A blast goes off near a hospital in eastern Cairo , state police report . The first explosion in the metro was caused by an improvised bomb at Shubra station , Al-Ahram reported , citing Interior Ministry spokesman Abdel-Fattah Othman . Minor explosions at two different metro stations . The Egyptian Interior Ministry has declared a maximum alert .
NEW : A blast goes off near a hospital in eastern Cairo , state police report . Minor explosions at two different metro stations . The Egyptian Interior Ministry has declared a maximum alert .