Former Yale University hockey coach Keith Allain has sent a letter to the university's president alleging that athletic director Victoria Chun has created a "toxic environment" within the athletics department.

In the letter, Allain accused Chun of silencing dissent and criticized her leadership style. According to the correspondence, Allain wrote that "Vicky Chun is the absolute worst leader I have ever been around in my life."

The allegations represent a significant challenge to Chun's leadership of Yale's athletics program. Allain's letter was directed to Yale's president, suggesting he sought to elevate his concerns to the highest levels of university administration.

Details about the specific incidents or policies that prompted Allain's allegations have not been disclosed. The timing of the letter in relation to Allain's departure from his coaching position was not specified in available reports.

Neither Yale University nor Chun's office has publicly responded to the allegations contained in Allain's letter. The university has not indicated whether it plans to investigate the claims or take any administrative action.