Damn that was fast

it could easily mean two things.

They sent the message before the news REPORTED the shooting

that's literally what the first comment in this chain is

No, because I highly doubt the news castors were waiting outside the place, so they could report the second the shooter starts shooting.

you don't know what kind of news they report

What if...
The news is the cause of the killings and the government is Tim by aliens and reptiles and aliens exist and 4th w Bermuda triangle and the Illuminati are related than the moon landing was fake and the earth is flat and ITS ALL A CONSPIRICY I TELL YOU!!!!!