A top official at the Secret Service is resigning just one week into the tenure of the agency's new director.

Chief Kevin S. Simpson of the Secret Service Uniformed Division resigned Monday, according to a statement from the agency.

“For nearly three decades, Kevin Simpson was a dedicated professional who served with honor and integrity. His void will be felt by the men and women of the Secret Service with whom he served with unwavering commitment,” said the new director of the Secret Service, Randolph D. “Tex” Alles, in a statement.

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Simpson joined the agency in 1988. His retirement will go in to effect on May 31, after 28 years of public service, according to the statement.

Simpson's resignation follows a rocky month for the Secret Service.

Two officers were fired in April over a security breach at the White House, and an agent was suspended the same month after allegedly soliciting a prostitute in Maryland while on Vice President Pence's security detail.