Juveniles convicted in NY state's family courts can be sent to detention facilities until they are 21 in many cases, and are often released after that.
The park where majors were stabbed, near the campuses of BarnardCollege and Columbia University, is in a district in Harlem that has become safer over the years and in which, according to police, the number of serious crimes has decreased dramatically in the past 20 years.
Majors was then rushed to a nearby hospital where she was pronounced dead. A law enforcement source familiar with the investigation confirmed the arrest.
He was found with a knife and admitted being involved in the attempted robbery and stabbing, the source said Friday.
"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.
The 18-year-old student at Barnard College was stabbed to death just blocks from the Manhattan school in an armed robbery on Wednesday, Barnard College President Sian Leah Beilock said. Authorities discovered he was carrying a knife during a search.
Majors' family said they are "devastated by the senseless loss of our handsome and talented Tess".
"We don't know what's going on", the aunt said in an interview with The New York Daily News. "Tess shone bright in this world, and our hearts will never be the same".
"We are devastated by the senseless loss of our handsome and talented Tess".
"We are thankful for the incredible outpouring of love and support we have received from across the country", the family told ABCNews in a statement Friday.
The statement added, "Reports to the contrary are inaccurate".
Law enforcement officers search Morningside Park along Manhattan's Upper West Side, Thursday, Dec. 12, 2019, in NY.
At a news conference of Thursday, New York City Mayor Bill de Blasio called the stabbing "unbelievable".
"The close-knit community at Barnard College is in shock right now", de Blasio said in a tweet.
People pause and place a candle at a make-shift memorial for Tessa Majors inside the Barnard campus, Thursday, Dec. 12, 2019, in NY.
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.
Bollinger told the gathering the attacks had left him unmoored for several reasons: because Majors was one of the youngest members of the community; because as a parent and grandparent he could readily imagine the pain her family is feeling; and because the tragedy had happened only a few yards in front of the home where he and his wife live, "so we will forever have the searing reality of that physical proximity". "But I know my nephew did not do this".
Barnard College is an all-women's school in Manhattan with more than 2,600 students.
A woman walks past a make-shift memorial for Tessa Majors inside the Barnard campus in New York City on December 12, 2019. The attack occurred on a set of stairs at Morningside Park.
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