The U.S. is on a heightened state of alert after the Department of Homeland Security warned of lone-wolf attacks in response to airstrikes on Syria.
This comes as the Pentagon says Monday night's airstrikes targeted not just ISIS but perhaps an even more immediate threat to the U.S. homeland called Khorasan.
According to a U.S. official, Khorasan, an al Qaeda-linked organization, was ready to blow up commercial flights.
CNN's Deborah Feyerick is OutFront with details.
Below, White House Deputy National Security Adviser Tony Blinken weighs in on the attacks.
The parents of the Boston bombing suspects are headed to the U.S., according to the Russian state news agency. Deb Feyerick is OutFront with the latest on that and the investigation in Boston.
Erin Burnett reads a statement from Martin Richard family on the capture of Boston bombing suspect #2. FULL POST
Erin Burnett talks to Mass. State Rep. John Lawn, Jr., who represents Watertown, Massachusetts about the capture of bombing suspect #2.
Tamerlan Tsarnaev and Dzhokar Tsarnaev - are the two men law enforcement officials and the rest of the world have had their eyes focused on for the past 24 hours.
Suspects described as brothers from Russian Caucasus
According to the FBI, the Tsarnaev brothers were behind the Boston Marathon bombings that killed three people and injured more than 180 people.
CNN's Live Blog: Manhunt for Boston Bombing Suspect
Here's what we know:
Campus police officer killed after being shot at #MIT, state police say. on.cnn.com/XUkSuE
— CNN Breaking News (@cnnbrk) April 19, 2013
Officials: Suspect No. 1 in the marathon terror attack is dead. Suspect No. 2 is on the run and considered armed and dangerous.
— CNN Breaking News (@cnnbrk) April 19, 2013
Erin Burnett is live in Boston with the latest in the massive manhunt for Boston bombing suspect, Dzhokar Tsarnaev at 7p and 11p ET on CNN.
#WANTED: Search for 19 yr-old Dzhokhar Tsarnaev continues. Suspect armed & dangerous. Call 1(800) CALL-FBI. twitter.com/Boston_Police/…
— Boston Police Dept. (@Boston_Police) April 19, 2013