Federal Reserve Bank of Dallas President Robert Kaplan announced his retirement from the central bank just hours after another top official at the central bank announced he was stepping down amid controversy over personal trades they made while on the job.

Kaplan, a former Goldman Sachs executive, announced his resignation on Monday, citing fallout from a series of trades he made last year while the Fed embarked upon an expansive asset-buying program. The resignation comes the same day that Federal Reserve Bank of Boston President Eric Rosengren, who was also facing public scrutiny, announced his retirement for health reasons.