Majors, staggered her way up to the "surface side" of Morningside Drive after being stabbed, according to Beilock, where she was found by a school security officer who called 911.
Majors died at a hospital.
"Last night's murder of a young woman near Morningside Park is despicable, unacceptable and goes against everything New York City stands for", he said.
According to CBS2, the 13-year-old faces robbery, murder and weapons charges. The boy, who has not been identified, was reportedly found Thursday in Manhattan's Morningside Park and was allegedly carrying a knife.
Majors was stabbed several times in Morningside Park, near West 116th Street, shortly before 7 p.m. local time Wednesday.
Majors's family, who traveled to NY from their home in Virginia, said they are devastated by the loss of their daughter.
"I am absolutely confident that any individuals involved in this bad, heinous attack will be brought to justice and will be brought to justice quickly", New York City Mayor Bill de Blasio said Friday during a radio interview. "Tess shone in this world and our hearts will never be the same".
The statement added, "Reports to the contrary are inaccurate".
People enter the main gate to Barnard College, in New York City's Upper West Side, on December 12, 2019.
"It is terrifying to think that this could happen anywhere", said de Blasio at a press conference Thursday.
"The close-knit community at Barnard College is in shock right now", de Blasio said in a tweet. "It's unbelievable to me that that could happen here, next to one of our great college campuses".
Majors pursued her love of music in NY where she was on scholarship at Barnard College, playing with the band Patient 0.
She and her band, Patient 0, had just put out their first album in the fall, and they had played their first New York City concert in October. "We mourn this devastating murder of an extraordinary young woman and member of our community", she wrote. "We are all grieving and trying to grasp the senseless tragedy that took Tess from us". "But I know my nephew did not do this".
Barnard College is offering counseling services for students to help them cope with the loss.
Morningside Heights residents were also shaken by the murder, especially since the neighborhood has witnessed violent attacks and robberies before, with almost two dozen incidents in the park since October 2018, according to CBS2.