St. Thomas Academy, the historic all-boys Catholic military school in Mendota Heights, is suddenly without a leader.
Its headmaster, Matthew Mohs, officially resigned his position this week, and it's not clear why.
The school made the announcement on Tuesday, saying the resignation was "effective the same day," the Star Tribune notes.
As the Pioneer Press reports, parents were notified via a letter from the St. Thomas Academy Board of Trustees, which said Mohs' departure was a "deeply personal decision" for him.
Per the paper, the letter asked for support for Mohs as he "transitions to the next phase of his career,” and thanked him for his "contributions and leadership” at the school.
The board also said it will appoint an interim headmaster and begin searching for a permanent replacement.
Mohs, himself a graduate of St. Thomas Academy (Class of 1990, according to his Facebook page), became headmaster in July 2014.
The school dates back to 1885, when its was founded by Archbishop John Ireland; its first students numbered just 66 and gathered in a "renovated building" in St. Paul, according to its website.
After a series of transformations, it moved to its present location in 1965.