Three major bombings in less than a week will be causing some anxiety among political leaders in Baghdad and Washington.  Last Thursday 10 people were killed by a car bomb at a crowded cattle market in Babel province, south of Baghdad.  On Sunday more than 30 died when a suicide bomber riding a motorbike blew himself up at a police academy in the capital. Tuesday's bombing in Abu Ghraib also killed and wounded a large number of people - including journalists and local officials.
The bombings were not related in any way.
The bombings were in different locations, and impacted different groups of people, and were different types of bombings, one being a car bombing and the other a suicide bomber. But, we do not know if they were part of a group trying to accomplish the same goal or were working with others or alone even. You can only speculate whether they are related or not, and cannot prove it either way That is why it was hard for the system, because it did not have enough information to prove it one way or the other.
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