BAGHDAD — A suicide bomber blew himself up among a group of demonstrators complaining about lack of security in an ethnically disputed northern Iraqi city on Tuesday, in the deadliest in a spate of attacks that killed at least 23 people, authorities said.
Iraq is weathering its worst outburst of violence since 2008, with more than 2,000 people killed since the start of April. The bloodshed appears to be largely the work of resurgent Sunni militants such as
Al Qaeda, feeding off Sunni discontent with the Shi’ite-led government.
In Tuesday’s deadliest attack, at least one suicide bomber detonated his explosives near Turkomen protesters who had set up tents in the city of Tuz Khormato, according to Ali Abdul-Rahman, a spokesman for the Salahuddin provincial governor. He said the protesters were demanding tighter security for the community following a deadly car bombing Sunday.
The Tuesday bombing killed at least 11 people and wounded 42, according to Munir al-Qafili, the head of the city council in nearby Kirkuk.
Among those killed were two Turkomen leaders, according to the United Nations mission to Iraq.
‘‘Such attacks aim to heighten tensions in this particularly sensitive region of Tuz Khurmatu,’’ UN envoy Martin Kobler said.