Violent clashes between protesters and security forces in Pakistan’s southern port city of Karachi and in the country’s north left at least 22 people dead and more than 120 others injured as demonstrators supportive of the Iranian government attempted to storm a U.S. Consulate on Sunday, authorities said.

In the north of the country, demonstrators attacked U.N. and government offices.

The violence came after the United States and Israel attacked Iran, killing its Supreme Leader Ayatollah Ali Khamenei. Police and officials at a hospital in Karachi said that at least 50 people were also wounded in the clashes and some of them were in critical condition.