BAGHDAD — Iran on Thursday condemned the burning of its consulate in southern Iraq just hours earlier, which came amid an escalation in Iraq’s anti-government protests that erupted nearly two months ago.

Violence across southern Iraq had continued throughout the night, with security forces killing 14 protesters and wounded 75 since Wednesday. Protesters closed roads while a large number of police and military forces were deployed across key oil-rich provinces.

Tehran called for a “responsible, strong and effective” response leadership to the incident from Iraq’s government, said Abbas Mousavi, a foreign ministry spokesman, in statements to Iran’s official IRNA news agency.

Protesters had set fire to the Iranian consulate in the holy city of Najaf late Wednesday. Iranian staff were not harmed, escaping out the back door. One demonstrator was killed and 35 wounded when police fired live ammunition to prevent them from entering the building. Once inside, the demonstrators removed the Iranian flag and replaced it with an Iraqi one, according to a police official who spoke on condition of anonymity, in line with regulations.

Anti-government protests have gripped Iraq since Oct. 1, when thousands took to the streets in Baghdad and the predominantly Shiite south. The largely leaderless movement is accusing the government of being hopelessly corrupt, and also decries Iran’s growing influence in Iraqi state affairs.

Protesters previously attacked the Iranian consulate in Karbala earlier this month, scaling concrete barriers running the building.

At least 350 people have died and thousands wounded as security forces have routinely used live ammunition and tear gas to disperse crowds, sometimes shooting protesters directly with gas canisters, causing several fatalities.

A curfew was imposed in Najaf after the consulate was burned. Security forces were heavily deployed around main government buildings and religious institutions on Thursday morning. The province is the headquarters of the country’s Shiite religious authority.

The consulate attack comes after days of sit-ins and road closures with protesters cutting access to main thoroughfares and bridges with burning tires. Protesters have also lately targeted the state’s economic interests in the south by blocking key ports and roads to oil fields.

In the oil-rich province of Nassiriya, fourteen protesters were killed overnight and 75 wounded by security forces who fired live ammunition to disperse them from a key bridge, security and medical officials said Thursday. Demonstrators had been blocking Nasr Bridge leading to the city center for several days. Security forces moved in late Wednesday to open the main thoroughfare. The officials spoke on condition of anonymity in line with regulations.

In Basra, security forces were deployed in the city’s main roads to prevent protesters from staging sit-ins, with instructions to arrest demonstrators if they tried to block roads.

Basra’s streets were open as of Thursday morning, but roads leading to the two main Gulf commodities ports in Umm Qasr and Khor al-Zubair remained closed. Schools and official public institutions were also closed.

Protesters had brought traffic in the oil-rich province to a halt for days by burning tires and barricading roads.