The United States has slapped Iran’s interior minister, who is accused of allowing Iranian security forces to kill hundreds of peaceful protesters, with sanctions.

The sanctions, which were announced on Wednesday, add to the “maximum pressure” campaign being waged against Iran. Secretary of State Mike Pompeo noted in a press release that one of the individuals targeted is Iranian Interior Minister Abdolreza Rahmani Fazli. According to Pompeo, Fazli gave the green light to the police to attack protesters last November, a move that killed up to 1,500 people.