Frank Arpan, the president of Haskell Indian Nations University, has resigned, according to sources close to the school.

Arpan told Haskell’s Board of Regents earlier in the week about his decision to resign, sources close to the university told the Journal-World.

It wasn’t immediately clear why Arpan, who was hired as the school’s president in May 2023, resigned the position. Arpan had been on the faculty of Haskell since May 2022, serving as the university’s vice president of academics.

Haskell has not made an official announcement of the resignation, and a call to the president’s office went unanswered on Friday afternoon. The webpage for the Office of the Haskell President now makes no reference to Arpan.

This is a developing story. Check back for updates.