UPDATE 5:39 P.M. EST: AP confirms the fifth fatality was a 75-year-old man injured in the attack. As reported, he died succumbing to his wounds.
UPDATE 12:33 P.M. EST: This morning, former President Barack Obama offered his condolences via Twitter stating, "My heart goes out to the victims and their families in London. No act of terror can shake the strength and resilience of our British ally."
This comes shortly after an American victim in the attack was named. Utah resident Kurt Cochran was in London to celebrate his 25th wedding anniversary. His wife Melissa survived, but was seriously injured.
In a statement, Mrs. Cochran's family shared:
"Kurt was a good man and a loving husband to our sister and daughter, Melissa. We express our gratitude to the emergency and medical personnel who have cared for them and ask for your prayers on behalf of Melissa and our family. Kurt will be greatly missed."
Aysha Frade, the mother of two young daughters who worked at DLD College London, also died in the horrific event alongside police officer Keith Palmer, 48.
UPDATE 11:35 A.M. EST: Police have confirmed UK Parliament attacker was 52-year-old Brit Khalid Masood – who had criminal convictions.
The dust is settling on the terror attacks at the British Parliament on Wednesday that left five people dead.
While there are still many questions to be answered, more details are coming out on the attacker's identity, who he was affiliated with, and what officials already knew.
On Thursday morning, ISIS claimed responsibility for the attack through their affiliated news agency, Amaq, which reported a "soldier of the Islamic State" carried out the Westminster attack.
The AP tweeted: