Mexico is developing a cellphone app that will allow migrants to warn relatives and consulates if they think they are about to be detained by U.S. immigration officials

The app -- dubbed Alert Button -- will allow nationals who think they are about to be detained to notify the “consulate closest to their location," officials said.

Mexico will launch a mobile application with an alert button for migrants facing imminent detention in the United States, the government said Friday, following President-elect Donald Trump's threats of mass deportations.