BAGHDAD — Gunmen shot and killed five Iraqi Army soldiers at a military checkpoint in south Baghdad on Wednesday as the country prepared for election results scheduled to be released Friday.

Seven people were killed and 11 others were wounded in Baghdad and in restive areas north and east of the capital.

The soldiers were fatally shot by a group of men in three cars as they passed through a checkpoint in Radwaniya, a Sunni neighborhood near the Baghdad airport, said a security official who spoke on the condition of anonymity because he was not authorized to speak to the media.

When the bodies of the soldiers were discovered, the police sealed off the neighborhood. Seventeen men were arrested as part of the investigation, the security official said.

Two police officers were killed at a checkpoint in the same neighborhood on Monday by gunmen riding motorcycles, the security official said.

In Mosul, a tense city in Nineveh Province in the north, a mortar shell landed near the headquarters of the Kurdish Democratic Party, wounding five people, police officials said.

The Kurdish Democratic Party is part of a Kurdish political coalition running second in parliamentary elections in Nineveh Province, behind an alliance led by Ayad Allawi, interim prime minister of Iraq in 2004 and 2005.

Most of Mr. Allawi’s supporters in the province are Sunni Arabs, who are locked in a power struggle with the Kurdish population.

Two other people were killed and six others wounded during separate bombings in Mosul, Baghdad and Diyala Provinces.

Iraq is preparing for results from the March 7 parliamentary vote. With 95 percent of the vote counted, Mr. Allawi has a slim lead over Prime Minister Nuri Kamal al-Maliki, but Mr. Maliki is ahead in seven provinces compared with five for Mr. Allawi.

Members of Parliament are selected based on the vote in each of Iraq’s 18 provinces, rather than by the national total.

Shoppers in Baghdad stocked up on food supplies in anticipation of violence or the possibility of curfews after election results.

In Anbar Province, a suicide bomber killed two people and wounded two others when he blew himself up near the home of an antiterrorism official, police and hospital officials said.

The apparent target, Lt. Col. Walid Slaiman, chief of the counterterrorism unit in the town of Hit, was uninjured, but the dead and injured were his relatives, the police said.