[Previous story, published at 1:33 p.m. ET]
Florida gunman Omar Mateen called a friend to say goodbye as he carried out his shooting rampage at a gay nightclub in Orlando, two law enforcement officials said Wednesday.
The FBI has interviewed the recipient of that call, the sources said. Mateen also made calls to 911 and a producer at CNN affiliate News 13 in Orlando, identifying himself as the shooter and saying he was acting out of allegiance to ISIS. Forty-nine people were killed and more than 50 others wounded in the massacre early Sunday at the club Pulse.
Matthew Gentili, a producer at the CNN affiliate, told the station he got a call about 2:45 a.m. Sunday from a man claiming to be the nightclub shooter.
' "Do you know about the shooting?' " the caller asked, according to Gentili.
"I'm the shooter. It's me. I am the shooter," the man said.
Gentili said the caller appeared to be speaking Arabic at one point and later told him, "I did it for ISIS. I did it for the Islamic State."
The caller would not say where he was.
"Is there anything else you want to say?" Gentili recalled asking. "He said no and hung up the phone."
The FBI is working to access data from the phone used by the gunman, law enforcement officials said. Investigators have obtained significant amounts of data from service providers, including email.
The Samsung phone was damaged after it became submerged in water and blood when SWAT officers severed a water main while tearing down a wall to the nightclub to rescue hostages, officials said.