Russian hackers, meanwhile, took to the Net, launching waves of distributed denial-of-service attacks against the country's government, banking and media Web sites, using thousands of personal computers hijacked with hidden software to overload the servers.

FORBES: Worst Cybersecurity Meltdowns

It seeks to locate both suspects at the scene of the bombing and then pieces together the operation to intercept them three days later, as they drove a hijacked car near the city, hours after images of their faces were broadcast by the media.

BBC: Boston Marathon bombing: Mystery remains over motive

All over Egyptian social media nowadays there is advice on what to do if your car is robbed or hijacked.

BBC: Rebuilding Egypt's tarnished police