"Forty-eight hours in the siege of a city - the end of Constantinople
[HH] That night the rumor had spread in the city that the Turkish camp was burning so people raced to the walls to see if this were true. They stood there pointing and exclaiming until reality dawned... the end had come nearer [HH] Mehmet was determined on the conquest, to do what no Muslim had been able to do ever since the first siege in 674, just 42 years after the Prophet Mohammed’s death"
More:Forty-eight hours in the siege of a city - the end of Constantinople - Turkish Daily News May 26, 2007