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DENVER - A spokeswoman for Denver Mayor Michael Hancock declined to discuss the reason behind the resignation of the city's top planner.

On Friday, Rocky Piro resigned his appointed post as Manager of Community Planning & Development, which he had held since December 2012.

"It has been my pleasure to serve our City and I am very proud of the progress we accomplished in the Department," his resignation letter read in part.

A department spokeswoman confirmed Piro's resignation but referred further questions to the Mayor's office.

"The city is thankful for his service and wishes him the best of luck in his future endeavors," said mayoral spokeswoman Amber Miller.

The resignation letter notes that February 7 was Piro's last day in the office but that he would remain in the job through March 7.

Asked to clarify what Piro would be doing out of the office during his final month on the job, Miller wrote via email "For the next 30 days, Rocky will be assisting with the transition of the department."

A call to Piro's home was not immediately returned.

Piro, who is a native of Denver, joined the city from the Puget Sound Regional Council in Seattle, Washington.

The Community Planning and Development Department is currently dealing with the Union Station redevelopment, updated zoning in areas including Cherry Creek and FasTracks development.

Last month, Piro's deputy in the department, Molly Urbina, announced she would leave in February to take a job with the State of Colorado.

If you have additional information about this story, please contact the 9Wants to Know investigative team at blowthewhistle@9news.com.

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