The International Olympic Committee (IOC) said on Thursday in Singapore that the London bombing was not related to the Olympic Games.
The bombing came just about one day after London was awarded the right to host the 2012 Olympic Games. A series of terror blasts have ripped through central London leaving scores of casualties.
"I don't want to speculate too much at this stage, but from what we understand and from what we are being told, this is not at all related to the Olympic Games," said IOC spokeswoman Giselle Davies at a press briefing.
The IOC said in a statement released later that Rogge has personally expressed his sympathy in writing to the British Prime Minister Tony Blair and to the Mayor of London Ken Livingstone.
"It is a very sad fact of society today that tragic and shocking attacks of this nature can happen in any city at any time," said the statement.
"The IOC would like to send a message of support to London, following the tragic events of the past hours.
"The IOC's thoughts are with all those who are personally affected," the statement concluded.