[arthurus]

Terrorism is one possible motive being explored,

The per's name is Abdul or Mohammed and he was yelling "Allahu Akbar!" so it is unlikely but remotely possible that terrorism might have been a motive.

[Mrs. Don-o]

Let's not jump to xenophobic conclusions. The motivation of the alleged attacker will eventually be fully clarified, as long as we keep in mind that the literal translation of Allahu Akhbar is

This has nothing to do with Islam.

...or so I'm told...