Despite intensive previous bombing and shelling, enemy fire was heavy.
However, blast walls built since the previous bombing deflected the force of the explosion.
None of the previous bombings this year has been against a Jewish target.
This attack came less than a week after the previous bombing but once again failed to injure anyone.
Ironically, Anne Owens had survived a previous bombing at her workplace.
He did not mention Chechnya, but the attack bore the characteristics of previous bombings attributed to the separatist war there.
One of the leads suggested was a paroled political activist who had been imprisoned for a previous bombing.
It was the only previous bombing in the capital.
In the previous bombings, more than 275 people have died and over 100 were injured.
Local villagers claimed the three men killed were collecting scrap metal left by previous bombings.