(KUNA) -- At least five Iraqi policemen were killed and another two injured Tuesday in a clash with gunmen in Salah Eddin Governorate, while in Mosul five construction workers were killed and another seven injured when gunmen opened fire on them.Iraqi police source told Kuwait News Agency (KUNA) that the construction workers were leaving the site of a project to build the Iraqi military headquarters when anonymous gunmen opened fire at them. Gunmen also attacked an Iraqi police check point north of Dujail, killing five Iraqi policemen and injuring another two.