BRONX (WABC) -- A man was arrested on multiple charges Wednesday in the death of a 16-year-old killed last summer in the Bronx. Kenhy Sarrias-Buelvas, 37, was charged with killing 16-year-old Kemari Sanders after detectives used DNA collected by Customs and Border Protection agents when he crossed the border in Laredo, Texas in December 2023. "He would give his shirt off his back, never talk back to me, that man took something that meant a lot, that was my baby boy," Sanders' mom Selena Cox said.