Two policemen were killed and three injured Monday in separate attacks in the northern Iraqi city of Mosul, a local police source said, DPA reported.
"A bomb went off near a police patrol in al-Hadbaa area, eastern Mosul, leaving one policeman killed and three injured," said the police source.
Another policeman was killed when an unidentified gunman threw a grenade at a checkpoint in the Khazraj area, western Mosul, the source added.
The attacks came ahead of the electoral commission's expected announcement of results from a tally of 60 per cent of the votes in last week's parliamentary elections widely seen as a key test of Iraq's stability ahead of US combat troops' withdrawal by the end of the year.
Mosul is among Iraq's most ethnically and religiously diverse cities, and among the most dangerous.
Despite successive security pushes that police say have netted hundreds of suspected insurgents in the past year, the city still suffers near-daily fatal attacks.
On Sunday, a string of attacks left at least four police men and two civilians killed and seven injured in Mosul, which lies some 400 kilometres north of Baghdad.