Ireland has formally joined South Africa’s genocide case against Israel, according to a statement on Tuesday from the International Court of Justice.

The filing, made on Monday, comes months after Ireland announced plans to intervene in the case before the United Nations’ highest judicial body.

“Ireland, invoking Article 63 of the Statute of the Court, filed in the Registry of the Court a declaration of intervention in the case concerning Application of the Convention on the Prevention and Punishment of the Crime of Genocide in the Gaza Strip,” the court said in a statement on Tuesday.