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ORLANDO, FL - JUNE 13: Crystal Murphy, Krya Murphy, Nicole Edwards and Kellie Edwards (L-R) stand together during a memorial service at the Dr. Phillips Center for the Performing Arts for the victims of the Pulse gay nightclub shooting where Omar Mateen allegedly killed 49 people, June 13, 2016 in Orlando, Florida. At least 49 people were killed and 53 others injured in what is the deadliest mass shooting in the country's history.  (Photo by Joe Raedle/Getty Images)
ORLANDO, FL - JUNE 13: Crystal Murphy, Krya Murphy, Nicole Edwards and Kellie Edwards (L-R) stand together during a memorial service at the Dr. Phillips Center for the Performing Arts for the victims of the Pulse gay nightclub shooting where Omar Mateen allegedly killed 49 people, June 13, 2016 in Orlando, Florida. At least 49 people were killed and 53 others injured in what is the deadliest mass shooting in the country's history.  (Photo by Joe Raedle/Getty Images)

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Terrorist's father on what daughter-in-law knew

The FBI is intensifying its investigation to determine whether the wife of the Orlando mass shooter had known about his plan to murder 49 people at the gay nightclub. CNN's Drew Griffin reports.

Terrorist's father on what daughter-in-law knew

The FBI is intensifying its investigation to determine whether the wife of the Orlando mass shooter had known about his plan to murder 49 people at the gay nightclub. CNN's Drew Griffin reports.