A teacher who died after being stabbed at John Tyler High School in Tyler has been identified by a relative as Todd R. Henry.

Jody Henry told The Associated Press that his 50-year-old brother, who was attacked Wednesday morning, was an "accomplished and respected guitarist." Todd Henry was a music therapist who worked with special needs students.

Tyler police spokesman Officer Don Martin said a juvenile was detained following Wednesday morning's attack. Further details were not immediately released.

Martin referred questions to Angela Jenkins, a spokeswoman for John Tyler High School. Jenkins did not immediately return messages left by The Associated Press.

Tyler is about 90 miles southeast of Dallas.