Authorities say three of the four dead in a mass shooting in Stockton, California, were children killed during a birthday party at a banquet hall. Heather Brent with the San Joaquin County sheriff’s office said at a news briefing Sunday that the children were ages 8, 9 and 14 years old. A 21-year-old also was killed and 11 others were wounded in the shooting Saturday night. Brent said the shooting appeared to be a targeted incident but she did not say who might have been targeted or why. No one has been arrested. Faith leaders in the Stockton area were planning a Sunday afternoon vigil for the dead and wounded. Read morePolice search for shooter after 4 are killed, 3 of them children, in shooting in California

Travelers at the end of the Thanksgiving holiday on Sunday were finding hundreds of flights delayed and canceled in Chicago following a winter storm in the Great Lakes region, while a wintry mix of rain and snow developed in the Northeast. In Wisconsin, utility crews worked to restore power to thousands of people while the airport in Des Moines, Iowa, reopened by midday on the critical travel day after a Delta Connection flight landing from Detroit slid off an icy runway. No injuries were reported, and passengers were transported to the terminal by bus. Read morePost-Thanksgiving travelers in Chicago see flights canceled and delayed after winter storm

Emails obtained by The Associated Press show that the Afghan man accused of shooting two National Guard members near the White House had been unraveling for years. Rahmanullah Lakanwal couldn't hold down a job and he flipped between long, lightless stretches of isolation and sudden weekslong cross-country drives. His behavior deteriorated so sharply that a community advocate who works with Afghan families in Washington state reached out to a refugee organization for help and feared Lakanwal was becoming suicidal. The person spoke on the condition of anonymity to share undisclosed details while cooperating with the FBI in its investigation. Read moreSuspect in National Guard attack struggled with 'dark isolation' as community raised concerns