Members of Occupy Boise and the American Civil Liberties Union of Idaho are suing the state over a new set of rules created for protests and rallies around the Capitol.
The lawsuit filed in federal court in Boise Monday claims the rules infringe on the First Amendment right to free speech and assembly.
It's the latest legal twist since Occupy Boise protesters set up a camp in December near the Capitol.
During the 2012 Legislature, lawmakers passed a law intended to boot the protest and its tents from the Capitol Annex. A federal judge intervened and ultimately decided the state could ban overnight camping and cooking but could not evict the protesters entirely.
The Department of Administration issued new regulations, including giving the state a five-day notice before a rally.