Clashes in Baghdad

An anti-government protester prepares to throw back a tear gas canister fired by police during clashes Friday in downtown Baghdad. Three people were killed when security forces fired live ammunition and tear gas at protesters, and separately, two people were killed by a roadside bomb explosion.

BAGHDAD — Iraqi security forces fired live ammunition and tear gas in renewed clashes with anti-government protesters in central Baghdad on Friday, killing three people.

Separately, two protesters were killed and 10 people wounded when a roadside bomb exploded in a central square, police and hospital officials said. They said the blast, which damaged several cars in the area, occurred in Tayaran Square, less than a third of a mile from Tahrir Square, the epicenter of anti-government protests in the capital.

The clashes came as Iraq’s top Shiite religious leader warned its government to heed calls for sweeping political changes.

Earlier, protesters repeatedly regrouped from under clouds of tear gas as they fought to tear down a concrete wall blocking access to Khilani Square. Security forces erected the barrier to keep the demonstrations from crossing a bridge that leads to the fortified Green Zone, the seat of government and many foreign embassies.

Tuk-tuk drivers ferried the injured back to makeshift medical tents stocked with saline used to douse demonstrators exposed to the tear gas. Many threw up on the floor when they got there, saying the gas was the strongest they had ever experienced.

“We aren’t afraid of them, the authorities,” said Akeel, 21, who asked to be identified only by his first name.

At least 320 people have been killed and thousands have been wounded since the unrest began on Oct. 1, when protesters took to the streets in the tens of thousands. They were angered by what they said was widespread corruption, lack of job opportunities and poor basic services.

Iraq is one of the world’s most oil-rich nations, but the populace has seen little of that wealth.

Hours before the clashes began, Grand Ayatollah Ali al-Sistani emphasized his support for the demonstrators in his weekly Friday sermon, saying none of their demands have been met so far and that electoral improvements should be a priority. The senior cleric called for a new election law that would restore public confidence in the system and give voters the opportunity to bring “new faces” to power.

But Iraqi authorities appeared determined to disperse the protesters and keep them confined to a shrinking space in the capital’s center.

The confrontations in Khilani Square began on Friday afternoon after hundreds of protesters who breached the concrete barriers streamed into the square, where they were met by soldiers and riot police.

Around 5:30 p.m., live rounds were heard by The Associated Press several hundred meters from the square, and shortly after wafts of stinging tear gas caused a mass of protesters to run toward the medical tents.

Iraqi security and medical officials, who requested anonymity in line with regulations, said three protesters were killed and at least 25 others wounded. Information for this article was contributed by Murtada Faraj of The Associated Press.