A judge in Washington state on Tuesday dismissed a climate change lawsuit filed against the state by a group of child activists.

King County Superior Court Judge Michael Scott ruled in favor of the State of Washington’s motion to dismiss the lawsuit, Aji P. v. State of Washington. The 13 young activists in the suit argue that the state is violating their constitutional rights through actions that cause climate change.

Judge Scott ruled that issues brought up in the case are political questions that cannot be resolved by a court, and must be addressed by Congress and the president.

Attorneys representing the children said they would make a formal statement on the judge's decision on Wednesday morning. An initial statement by Our Children's Trust, the group representing the children, suggested Judge Scott erred in his decision.

"Given the significance of the Court’s decision and the pronounced departures from proper judicial procedure and consideration of Plaintiffs’ claims, Our Children’s Trust will issue a formal statement regarding the decision tomorrow," the initial statement read.

The child plaintiffs in the lawsuit said they were both "saddened" and heartbroken" by the judge's decision.

The same group of child activists has also sued the federal government on the same constitutional grounds in Juliana v. United States. But that lawsuit has had better luck in federal appeals court, which rejected the Trump administration's several attempts to have the case thrown out.

More recently, the Supreme Court rejected a last-ditch attempt by the Trump administration to block the climate change lawsuit filed by children, meaning the lawsuit will have its day in court later this fall.

"The Government’s request for relief is premature and is denied without prejudice," read the high court's decision.

The case will be heard in federal district court in October.