MIAMI (AP) — Former U.S. Rep. David Rivera has halted his efforts to reclaim his seat.

The former Miami congressman announced on his Facebook page Friday that he was suspending his campaign, though he didn’t reference the ongoing federal investigation he’s facing. He blamed a Thursday ruling by “liberal activist judges” that invalidated Florida’s congressional district map. The ruling was based on a 2010 amendment that says districts cannot be drawn to favor incumbents or political parties.