The Federal Emergency Management Agency’s “Presidential Alert” test, which was scheduled for Thursday, has been delayed until to Oct. 3.

FEMA announced the postponement, citing the “ongoing response effort to Hurricane Florence,” according to NBC News.

And in a tweet, the agency noted: “Due to severe weather across much of the East Coast and ongoing response efforts, the national emergency alert test has been postponed to the backup date of Oct. 3, 2018 at 2:18 PM EDT.”

FEMA had announced earlier it would send a message to all U.S. cellphones to test a previously unused alert system. That system is set up to alert people about national emergencies.

The messages will be sent under the headline “Presidential Alert.”

But some social media users have expressed concern that a direct message from President Donald Trump could be used for political purposes, according to NBC News.