The U.S sanctioned five Iranian entities for their work on the nation’s ballistic missile program and signaled that more punitive measures lay ahead in response to the Islamic Republic’s suppression of anti-government protests.

The entities, none of which are publicly traded, are being designated for being owned or controlled by Iran’s Shahid Bakeri Industrial Group, the Treasury Department said in a statement released Thursday.

“The United States will continue to decisively counter the Iranian regime’s malign activity, including additional sanctions targeting human rights abuses,” Treasury Secretary Steven Mnuchin said in the statement.

The Trump administration plans to ask the UN Human Rights Council to convene an emergency session on protests in Iran in which the U.S. believes at least 21 people have been killed and more than 1,000 arrested, U.S. officials have said.

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