BAGHDAD (AFP) - Four people were killed and more than two dozen wounded on Tuesday in attacks across the Iraqi capital, police said. Three-day labourers were killed and another 14 wounded when a bomb went off in an empty lot where they were waiting for work near Palestine street, one of the main thoroughfares of Baghdad. Another person was killed and five others were wounded when two mortar rounds aimed at a police station in northern Baghdad struck near a housing construction site where they were working. In the centre of the capital a roadside bomb struck an electricity company vehicle, wounding a passenger and five bystanders. Meanwhile, in the northern city of Mosul 15 people were wounded in a car bomb attack against an Iraqi police patrol, said the US military, which considers the volatile city Al-Qaeda in Iraq's last urban stronghold.