It is rare but not unheard of for academics to be charged with murders of other academics.

Inside Higher Ed reports.

Dean allegedly shot by a fired professor

Authorities have charged Hengjun Chao, a former assistant professor at the Mount Sinai School of Medicine, with attempted murder for shooting the school’s dean and another man Monday morning at a deli in Chappaqua, N.Y. Chao is being held in jail.

The Journal News reported that revenge is believed to be a motive in the shooting of Dennis Charney, who is being treated for non-life-threatening injuries. The other man who was shot was treated at a hospital and released.

Mount Sinai officials confirmed that Chao was dismissed in 2010.

He then sued Mount Sinai in federal court and lost at the district court level and in a ruling by the U.S. Court of Appeals for the Second Circuit.