Most of them want to claim credit for what they did. The question of how long it takes for a terrorist to start announcing it is answered by the Jawa Report:
Sometimes immediately. Sometimes, not so much:
Osama bin Laden didn’t officially take responsibility for the attack until late October 2001 — almost two months after the assault.Then there’s the 2009 “underwear bomb” attempt by Umar Farouk Abdulmutallab. That attack occurred on Christmas Day — a Friday — but the message by al Qaeda in the Arabian Peninsula claiming responsibility didn’t surface until Monday, three days later. (It had been originally dated Saturday but wasn’t published on radical Islamic websites until Monday.)
And how about the Fort Hood shooting in 2009? It took four days for Anwar al-Awlaki to publicly praise his radicalized pupil, Maj. Nidal Malik Hasan, on his English-language web site for the tragic killing of 13 people in Texas.
And all of this is assuming that the individual who did the deed was directly connected to a larger terror network. Which misses entirely the notion of the “lone wolf jihadist”.
That’s assuming it’s a jihadist, which it may well be.
Also from Jawa Report:
A person briefed on the Boston Marathon investigation says the explosives were in 6-liter pressure cookers and placed in black duffel bags.The person says the explosives were placed on the ground and contained shards of metal, nails and ball bearings. The person spoke on the condition of anonymity because the investigation was ongoing.
The person says law enforcement officials have some of the bomb components but did not yet know what was used to set off the explosives.
Ball bearings glued together in sheets to act as fragmentation is a hallmark of Al Qaeda bombs. Of course, anyone could download Al Qaeda’s Inspire magazine and follow their directions, but this has many of the hallmarks of AQ – as Jawa Report also points out.
As a reminder, the magazine as well as components for making a similar bomb were found in PFC Jason Abdo’s room.
Raees Alam Qazi, a 20-year-old naturalized U.S. citizen from Pakistan, and his brother, Sheheryar Alam Qaz also wanted to use the same instructions in a plot to blow up tourist sites in New York City.
The magazine and bomb making instructions were widely distributed among would-be jihadis.