Saudi terror cell, al Qaeda and Mossad behind Boston Marathon bombings. See under "pressure cookers".

Of course, it comes from the Debka pressure cookers first:

DEBKAfile’s counterterrorism sources can disclose however that the investigation has in fact homed in on a suspected terror cell of three Saudi nationals, very possibly tied to Al Qaeda.
The flat they share in the Revere, Massachusetts, near Boston, was searched after the questioning of one of the suspects, a Saudi student, who was hospitalized with badly burned hands. One of his flatmates was taken into custody over “visa problems.” A third is on the run. All three hail from a prominent Saudi family belonging to a tribe from the Asir province bordering on Yemen.

But of course, cookers - sorry, kooks could be found in abundance on the other side, too, so a few of those as well (but no links, as usual):

DEBKA is a known Israeli propaganda front, and if they are pushing the "Blame the Saudis" it is another indication that Israel is behind this attack.

Oh Debka, Debka...

And some more definite "pointers":

Filthy Mossad is at it again, ruthlessly murdering people, in this case, Americans, just like they did on 9-11. In addition to the three murders as many as 170 people were injured, many severely. With the unwinding into oblivion of the Sandy Hook hoax, desperation took hold. The Mossad had to act. Therefore, it blew up the Marathon.

And:

Note: the Times Square bombing was conducted by Zionist Jews, a rabbi being caught in the act. He was caught on CCTV changing his outfit after setting the bomb. Regardless, this is all a Zionist plot to implicate Islaam for not only the Boston Marathon bombing but also for all their various acts of terror.

"Islaam"... meh... anyway, now you know it all.