A senior Pacific Investment Management Co executive resigned on Friday after facing allegations he acted inappropriately toward a colleague, people familiar with the matter said.

Bill De Leon, head of portfolio risk management and a managing director at the Newport Beach, California, bond manager, stepped down following a weeklong internal investigation into his alleged behavior at a May 2017 charity event in New York, the people said. While the gathering was not a Pimco event, it was attended by several employees of the firm.