Paraguay’s president was removed from office and detained after the country’s largest digital bank melted down, leaving half the populace without access to funds and plunging the country into a political crisis.

A youth-friendly banking app, Ueno collapsed amid allegations of insider lending and proximity to the country’s longtime ruling party, which is closely aligned with Washington.

The app was credited with expanding access in a region where as many as one in four adults does not have a bank account; its implosion was a “kind of tsunami in the end,” a political scientist said, and puts at stake “the credibility of a country that has spent years trying to establish itself as a stable, reliable destination for international investment,” a regional analyst wrote in Americas Quarterly.