Mohammad Aslam Khan, head of Karachi counter-terrorism cell, told the BBC that the attack was "clearly targeted" at the Bohra Ismaili Shia community, from which most of the dead and injured came.
In 2007, Price Waterhouse Coopers noted a counter intuitive relationship between profitability and sales revenue for publicly-traded fuel cell companies.
Reinares, who became a senior adviser on counter-terrorism in the Spanish government after the attacks, writes that when the Madrid cell was dismantled in 2001, there was insufficient evidence to prosecute at least three men.