Following this comment, ICEBlock grew in popularity overnight, bringing it to the top of the App Store on Tuesday before dropping to the third spot at the time of writing. According to its website, ICEBlock lets users report sightings of ICE officials with “two taps” and view reports that others have made within a five-mile radius.

The Trump administration is blasting a new app designed to warn people about the presence of immigration officers in their vicinity. The administration is threatening to prosecute the app developer and a media outlet for reporting on it.

An app allowing users to anonymously report ICE activity has surged to the top of the Apple store after it was condemned by government officials. ICEBlock, which is currently the most popular free app in the U.