At least three people died and over 88 were injured when security forces fired on people protesting a military coup in Sudan on Monday, the Central Committee of Sudan Doctors said.

Tens of thousands of demonstrators in Khartoum were shot at after Sudanese general Abdel Fattah al-Burhan had dissolved the country’s transitional government and declared a state of emergency.

Al-Burhan made the announcement in a televised speech, hours after a group of soldiers detained Prime Minister Abdullah Hamdok and other government officials.

Earlier, the Sudanese information ministry said Hamdok’s whereabouts were unknown after he was arrested for refusing to support the coup leaders, instead urging people to peacefully “defend the revolution.”