Two Yemeni brothers living in Saudi Arabia, aged 29 and 26 years, are facing trial for supporting the Houthi rebels and the Lebanese Hezbollah militia.
The Bureau of Investigation and Public Prosecution charged the duo and referred them to the Criminal Court in Riyadh to stand trial.
The first defendant was also charged with backing the Iranian government which supports the Lebanese militia, with arms and funds.
He also faces charges of establishing contacts with the Houthi rebels in Yemen and inciting the destabilizing of Saudi Arabia and subverting its national security.
The Saudi authorities have so far arrested 6 Yemenis accused of supporting the Houthi rebels.