A tragic love triangle was behind an alleged murder-suicide in Queens on Saturday night, with the love interest witnessing the bloodbath, law enforcement sources told The Post.
Police came upon the bloody scene in Bayside shortly after 10 p.m., finding 17-year-old Neo Secaira with a gunshot wound to the chest and Frank Liu, 28, a US Marine about to be redeployed, dead from an apparent self-inflicted gunshot wound to the head, police said.
Both victims were taken to New York Presbyterian Hospital, where they were pronounced dead, according to police.
Sources said the mayhem stemmed from a love triangle involving the two dead men and an unidentified 19-year-old woman.
Liu’s father, Huili Liu, 64 told The Post on Sunday that his son was troubled by the trauma of his overseas service in the Marine Corps and the shaky relationship with the younger woman.
“My son had psychological treatment all the time in the Marine Corps,” the distraught dad said. “Particularly recently, because his colleagues in Jordan, they died.
“The pressure of being called up and this, together, it was too much,” the older man said.
Huili Liu said his son met the younger woman while serving in North Carolina, and brought her home to New York — where she recently dropped a bombshell that she was also dating Secaira.
“I say, why? It’s just one girl. There are many girls,” he told his heartbroken son. “The girl lived in my apartment for half a year. He spent quite a while with her. She decided to study here.”
It’s not clear when Neo Secaira began seeing the woman.
In a cruel twist, the dead teen’s mother told The Post she learned of her son’s violent death from the alleged killer’s mom.
“At 7:50 this morning, a woman rings my bell,” distraught mom Yolanda Secaira said Sunday. “She asked me, she said, ‘Your son has curly hair?’ I said, ‘Yes.’ She said my son killed your son. I said, ‘What? Your son killed my son?’ She said yes.
“It’s a horrible story, and then she pointed to my husband and she turned and left,” she added.
The 19-year-old woman allegedly broke up with the older man and was dating the younger man, sparking the jealous outburst, the sources said.
Yolanda Secaira, 50, said her son’s boss told her his new love interest called him at work on Saturday, asking him to come pick her up.
The teenager left work early — and was killed when he arrived.
Meanwhile, the super in Liu’s building said the alleged killer was an Army veteran who lived with his parents in the family’s fourth-floor apartment for about 10 years.
“He had a Chinese girlfriend, a younger girl, a student,” he said. “About seven months ago she locked herself out and I tried to help her. She called him and he called me and he started yelling at me, asking, ‘Why aren’t you trying to help her?’
“Then he calls me again, screaming and cursing and angry and crazy, and then some hours later it turns out it’s because she was in the wrong building,” said the super, who asked not to be identified.
“It’s always stuff like this with him, all this crazy kid stuff,” he added. “He was a stupid kid.”
The shooting rattled the neighborhood.
“I heard the gunshots and then I heard a woman screaming, ‘Help, help,’” neighbor Jennie Kim told The Post. “My daughter was calling me and she was afraid. I went in and we looked and we saw a young woman, high school maybe college age. Teens, maybe 20. Asian lady, long hair. And we heard the shots.
“There are three in a row and then a pause, maybe 30 seconds, maybe a minute,” said Kim, 43. “And then at least one more gunshot.”
The NYPD has not identified the victims and said the investigation into the deadly shooting is ongoing.