Have a look at how various news outlets were describing the carnage from the Boston explosions as of approximately 4:30 this afternoon:

Washington Post

Fox News

New York Times

CNN

And, finally, the New York Post:

In addition to its anomalous report on casualties, the New York Post is reporting that “Authorities have a identified a suspect, a Saudi national, who is currently being guarded in a Boston hospital with shrapnel wounds.”

Meanwhile, a spokesman for the Boston Police Department is saying that authorities “haven’t been notified of any arrests or anyone apprehended.”