Nearly 90 minutes later, another 9-1-1 call came in: A passer-by recognized Belajonas' 2006 gray Nissan Pathfinder from the alert. It was parked on a dead-end street, 6 miles south of the CVS he'd just robbed, with a hole in the window, said Officer Sophia Mason, an NYPD spokeswoman.
Police swarmed the scene and found Belajonas dead, having shot himself in the head, Mason said.
The two-state crime spree left even seasoned cops rattled.
"My thoughts are for the children, those two little boys," said Upper Darby Police Superintendent Michael Chitwood, whose department handled the investigation here. "Apparently there was a pretty violent struggle before the actual murder. There's no doubt in my mind they saw what happened."
In fact, as Belajonas ushered his boys from their home to flee, Chitwood said, a neighbor heard one boy ask: " 'Is Mommy dead?' "
The boys, Robert and Christopher, were taken to a New York hospital for evaluation, although they weren't injured, Chitwood said. Child-welfare authorities will determine who will care for the boys, he added.
Neither Belajonas nor his wife had a criminal record in Pennsylvania, although Belajonas had at least one weapons offense in New York, Chitwood said.
As police probed what prompted Belajonas' brutality, social media provided some clues.
He was gaga for guns, filling his Facebook page with gun-rights photos and sayings. "If you support more Gun Control, please 'Unfriend Me' Today Thank you!" read one. Another pictured Chuck Norris with the words: "If some thug breaks into my home . . . I can use my roundhouse kick, but I prefer he look down the barrel of my gun."
On Twitter in May 2012, Belajonas wrote: "Wanna shoot someone soooooooo bad right now . . . "
He hated minorities, liberals and President Obama, but loved strip clubs, cars and porn, judging by his Twitter and Facebook feeds. He often exchanged explicit tweets with his wife on recent or planned sexual encounters.
Corrigan-Belajonas was a Folcroft native and a graduate of Archbishop Prendergast High School, according to her Facebook page. She worked at Little Flower Manor, a Darby nursing home, until she was fired recently, Chitwood said.
The couple married about three years ago and lived in the home on Abbey Terrace near Albemarle Avenue for a few years, Chitwood added.
"The place was a pigpen," Chitwood said. "It stunk of cat urine, and there was trash and garbage and roaches all over the place. It looked like a slaughterhouse. I don't know where the kids slept."
Chitwood planned to ask the Health Department to declare it uninhabitable after police finished processing the scene.
On Twitter: @DanaDiFilippo