ORLANDO, Fla. (CNN/WAVY) – The Orlando shooter and his wife exchanged text messages during the Pulse nightclub shooting, a law enforcement official briefed on the investigation told CNN.

Around 4 a.m., about two hours after the attack started, Omar Mateen texted his wife, Noor Salman, while he was holed up in the club’s bathroom. Mateen asked if she’d seen the news in the message, the official said.

At one point, Salman responded with a text saying that she loved him. She also tried calling Mateen several times during the standoff, a second law enforcement official said. The timing of her calls came after reports of the attack had emerged, and apparently after her husband might be responsible.

Mateen didn’t answer, the official said.

Also according to CNN, shortly before and during his massacre at Orlando’s Pulse gay nightclub, Omar Mateen vented on Facebook.

“America and Russia stop bombing the Islamic state,” the gunman wrote, according to the chairman of the Senate Committee on Homeland Security and Governmental Affairs.

“You kill innocent women and children by doing us airstrikes..now taste the Islamic state vengeance.”

Then, in his final post, an ominous warning: ”In the next few days you will see attacks from the Islamic state in the USA.”