Just days after the International Olympic Committee (IOC) Evaluation Commission ended its inspection, the car bomb injured 39 people following a warning from the Basque separatist group ETA.
If Madrid hosts the 2012 Summer Olympic Games a number of events would be held at the convention centre, reports GamesBids.com
It was the worst blast in Madrid since last year’s March 11 train bombing.
There is speculation that the attack could erase any hope that ETA might declare a truce before Basque elections in April.
