From left: Aleksandra Witek and sons Lucian and Calvin.Photo:Gofundme

NYC Police Identify Family Killed In Murder-Suicide, Aleksandra “Ola” Witek and her two toddler sons, Calvin (age 1) and Lucian (age 3),

Gofundme

New York City police have identifiedfour family memberswho were found dead in an apparent murder-suicide at their Upper West Side apartment earlier this week.The NYPD confirmed to PEOPLE that Edison Lopez, 41, Aleksandra “Ola” Witek, 40, and their two sons, Lucian, 3, and Calvin, 1, were found stabbed to death inside the family’s apartment on Monday afternoon.

A NYPD spokesperson told PEOPLE that Edison and Ola, his fiancé, according to aGoFundMe, were found dead with stab wounds to the neck. Lucian had stab wounds to his torso, and Calvin, the youngest son, was found dead with stab wounds “around the body,” police said.

All four were pronounced dead at the scene, while their family members have told media outlets they believe the unexpected killings happened a day earlier.“The investigation remains ongoing at this time,” police said.

“We saw them inside,” Mario Lopez, Edison’s 66-year-old father, toldGothamistover the phone this week. “They were already dead, whatever happened, happened maybe the day before.”

Lucian Lopez.Gofundme

NYC Police Identify Family Killed In Murder-Suicide, Aleksandra “Ola” Witek and her two toddler sons, Calvin (age 1) and Lucian (age 3),

Mario said there were no signs of trouble with his son’s family.

“If you look around and ask their friends – very levelheaded individuals. Both of them,” he told the outlet about Edison and Ola. “You usually see problems in a couple where you see the behavior of the children affected immediately. Their grandmother, my wife, took care of them. We didn’t see anything.”

Neighbor Jeff KimmeltoldNBC New York he’d known the Lopez family for more than two decades and “always thought they were really nice.” Another neighbor told the news station Edison was “always with his kids” and seemed friendly.

Calvin Lopez.Gofundme

NYC Police Identify Family Killed In Murder-Suicide, Aleksandra “Ola” Witek and her two toddler sons, Calvin (age 1) and Lucian (age 3),

Edison grew up in the apartment and took over as the building’s superintendent from his father, according toABC News.

Ola was a preschool teacher and “a proud Polish mom,” her familysaidin a GoFundMe launched Tuesday.

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“Ola was an incredibly loving and devoted stay-at-home mom to her two young sons,” the family said. “Being a NYC school teacher, she instilled her knowledge and teachings on the growth of her boys who had blossoming imaginations and whose curiosity and sweetness to family and friends alike captured everyone’s hearts.”

The family added: “A proud Polish mom, Ola shared her culture and language and made the lives of her boys bright and full. Her boys loved playing with their toys, story time with mom, and were two delightful babies to all that loved them.”

If you are experiencing domestic violence, call the National Domestic Violence Hotline at 1-800-799-7233, or go tothehotline.org. All calls are toll-free and confidential. The hotline is available 24/7 in more than 170 languages.

source: people.com