UPDATES: Terror on Patriots' Day: Explosions Rock Boston, Dozens Injured, Authorities Announced “Drill”

Note: CNN hack Wolf Blitzer has speculated live on air that an anti-tax group was behind the attack.

Two explosions have rocked the Boston Marathon, injuring numerous people and causing at least 12 deaths.

The official Boston Marathon website has confirmed, through their official Facebook, that two bombs were detonated near the finish line.

There were two bombs that exploded near the finish line in today’s Boston Marathon. We are working with law enforcement to understand what exactly has happened.

More updates are rolling in, see below:

A report from the Chicago Tribune revealed that police have confirmed that two explosions hit near the end of the marathon.

Pictures from the scene showed blood stains on the ground and several people knocked down. Massachusetts General Hospital was treating four victims of the explosion in its emergency room but information about their condition was not immediately available, a spokeswoman said.

To make matters worse, Fox News is reporting that at least 10 injuries include amputations:

At least three people are dead and dozens injured – including up to 10 with amputated limbs – after two explosions rocked the area near the finish line of the Boston Marathon.

Reports of deaths and a possible third bomb are coming in by the minute. Stay tuned as more information becomes available.

Update: Fox News is reporting that a suspect has been confirmed and is being guarded in a Boston area hospital. 2 known dead, at least 24 injured.

Officials have told NBC News that a small homemade bomb was the cause of at least one of the explosions. (Via Tweet)

Update 2: The Boston Globe has tweeted that a controlled explosion was set by the bomb squad.

From the NY Post: “Authorities have a identified a suspect, who is currently being guarded in a Boston hospital with shrapnel wounds.”

Update 3: From Fox News:

The simultaneous explosions, and reports of two other unexploded devices found near the scene raised suspicions that the blasts, just before 3 p.m., could be part of a terrorist attack.

Authorities shut down cellular service in the area in order to prevent remote detonations. Intelligence officials told The Associated Press two unexploded devices were being dismantled, and a third explosion near the JFK Library in the Columbia Point section of Dorchester. Competitors and race organizers were crying as they fled the bloody chaos, while some witnesses reported seeing victims with lost limbs.

Update 4: A report from a Boston area NBC affiliate quoted an eyewitness who claimed that officials kept making announcements on a loud speaker that it was just a drill.

“They kept making announcements on the loud speaker that it was just a drill and there was nothing to worry about,” Coach Ali Stevenson told Local 15.

“It seemed like there was some sort of threat, but they kept telling us it was just a drill.”

Update 5: All Boston police have been called to active duty. Multiple reports indicate police guarding a Saudi National at a local area hospital. CNN Analyst Peter Bergen has stated that it could be right wing extremists.

Warning: Traumatic video and images below: