BAGHDAD, Iraq (AP) – Gunmen stormed the home of a Sunni family threatened with death for meeting with local Shiites, separating out the women and children and executing six men on Saturday, Iraqi police and military officials said.

The attack near Youssifiyah, 12 miles south of the Iraqi capital, was apparently connected to rising sectarian violence that has included the claimed abduction and execution Friday of at least 14 members of the Shiite-led security forces. But in this case, Iraqi authorities said they believed Sunni gunmen had killed fellow Sunnis – revealing a rift between those who support reconciliation with Shiites and those who will kill to stop it.

The men gunned down Saturday – all relatives from the Mashhada tribe – were killed after gunmen stormed the family’s house at dawn, said police First Lieutenant Haider Satar.

Iraqi Army Captain Ahmed al-Obeidi, whose unit is stationed near the site of the attack, confirmed the attack.

The bodies were transferred to a hospital morgue in the neighboring town of Mahmoudiyah, where Associated Press Television footage showed at least two had their hands tied bound behind their backs.

Police, citing information from surviving relatives, said the victims had received threats from Sunni insurgents after participating in a reconciliation conference with Shiites last month.

Also Saturday, the American military said American warplanes bombed an area near Taji, on Baghdad’s northern outskirts, killing “key terrorists” who were using anti-aircraft artillery to fire at military helicopters.

Lieutentant Colonel Christopher Garver, an American military spokesman, told The Associated Press that insurgents near Taji had been firing at American helicopters with heavy machine guns mounted on the back of truck.

“It’s mobile and it can inflict damage to our helicopters,” Colonel Garver said. “Anything that can threaten our helicopters, we’re going to try to get it off the battlefield,” he said of the Friday air strike.

At least eight American helicopters have crashed or been forced down by enemy fire this year, several near Taji. On Thursday, the American military said an Army helicopter made a “hard landing” near Kirkuk, but an initial investigation blamed mechanical failure rather than hostile fire. Two pilots were injured.

In a separate raid in the Taji area on Saturday, nine suspected insurgents were captured, including two believed to be responsible for recruiting and helping foreign militants join the insurgency in Baghdad, the U.S. military said. The suspects were also accused of harboring Al Qaeda in Iraq leaders, it said.

Iraq’s defense ministry said Saturday that Iraqi troops killed three suspected militants in Khan Bani Saad, a mixed town northeast of Baghdad. Two men were arrested in the raid, the ministry said in a statement. Seven others were captured in Balad Ruz, 45 miles northeast of Baghdad, it said.

Meanwhile, American Ambassador to Iraq Zalmay Khalilzad wrote in a commentary published Saturday that “resolving concerns about control of oil is central to overcoming internal divisions in Iraq.”

Iraq’s new oil law would “serve as a vehicle to unify” the country, Mr. Khalilzad wrote in The Washington Post.

“The goal of Iraq’s leaders was to draft a law that ensured that all Iraqis could be confident they would receive their fair share of the benefits of developing the country’s resources,” he wrote.

Iraq’s Cabinet has signed off on the law, and parliament will review it later this month.

In other violence:

_ A roadside bomb exploded on a minibus Friday night in Latifiyah, about 20 miles south of Baghdad, killing two women and an 11-year-old child, said Satar.

_ Gunmen killed a civilian and wounded two others in separate attacks Saturday near Hillah, about 60 miles south of Baghdad, police Captain Muthana Khalid said.

_ An Iraqi special forces agent was shot dead Saturday in an ambush on his convoy in Adil, a predominantly Sunni neighborhood of western Baghdad, police and hospital officials said.

_ Three gunmen killed a police officer after breaking into his house Saturday in eastern Mosul, said police Brigadier General Abdul Karim Khalaf.