The Pentagon said Thursday it has received no request to prepare to send additional troops to the southern border following a morning tweet from President Trump threatening to deploy the military over an approaching migrant caravan.

“The Department of Defense has not been tasked to provide additional support,” Lt. Col. Jamie Davis, a Pentagon spokesman, said in a statement.

The one-sentence response came more than eight hours after the president’s tweet about the group of more than 4,000 migrants from Honduras traveling toward Mexico in an effort to enter the United States.

“In addition to stopping all payments to these countries, which seem to have almost no control over their population, I must, in the strongest of terms, ask Mexico to stop this onslaught - and if unable to do so I will call up the U.S. Military and CLOSE OUR SOUTHERN BORDER!..” Trump tweeted.

[More: Trump threatens to pull aid from Honduras if caravan isn't stopped]

About 2,100 National Guard troops are stationed at the border after Trump ordered a deployment this year due to what he called an illegal immigration crisis.

The service members are assisting U.S. Customs and Border Protection, which has the lead in policing the southern border and enforcing immigration laws.