Police now say the two boys shot dead in upstate New York were killed by their father, who also killed his wife.
Officials said they did not have an exact timeline of events, but said they believe the father, a 49-year-old pharmacist, shot the wife and children, 9 and 13, before killing himself.
Authorities had been searching for the wife's body and found it Friday, a day after the bodies of the others were located.
The father's body was found with one of the boys in a car parked at an A&P supermarket in Pleasant Valley, N.Y., and the other son was found at the family's home. A shotgun was recovered in the car.
The woman's body was found Friday beside a road in Wappingers Falls, about 13 miles south of where her family was found, police said.
The parents came to the U.S. from Pakistan in the 1990s and had moved to the area from Goshen about two months ago, police said.
A former next-door neighbor in Goshen said the father was "just a nice guy."
"His parents lived with them and he took care of his family," said John Blaine, who lived next door to the family.
"I can't even imagine. I can't," said Blaine, still stunned after the shootiings.
The Arlington Central School District said the 9-year-old boy Zain, who was in the fourth grade, was personable, hard-working and "always smiling."
His eighth-grader brother Mugthba is being remembered as kind, funny and athletic, who had plans to try out for the basketball team.