A 15-year-old boy was stabbed to death during a dispute with an older man in Brooklyn on Thursday afternoon, police and sources said.

Tory Lovik was rushed to Kings County Hospital following the 3:30 p.m. incident in Stuyvesant Heights, and was later pronounced dead, according to police.

A 48-year-old man was taken into custody at the scene outside 158 Decatur St and brought to the 81st Precinct for questioning.

As of Thursday night, the man had not yet been charged, police said.

The Post is withholding the name of the slain teenager pending family notification.

It is not immediately known what the dispute was about nor what sparked it.