The Amazon executive Jay Carney emailed Mayor Rahm Emanuel of Chicago on the day Amazon announced its shortlist of 20 candidates for the site of its second headquarters.

"As I think I mentioned before, everyone here was impressed with the proposal your team put together," Carney said.

Emanuel ended the exchange with an apparent joke: "Whose (sic) your daddy? Talk soon. Hope family is good."

The email exchange reveals that Emanuel has a direct line of communication with Amazon, as Chicago remains in the running for the site of the company's second headquarters.

A new report has exposed private emails between an Amazon executive and the mayor of Chicago concerning the city's bid for Amazon's second headquarters.

On the day Amazon announced a shortlist of 20 potential cities for its second headquarters, the executive, Jay Carney, wrote Mayor Rahm Emanuel an email saying "everyone" was impressed with Chicago's bid, the Chicago Tribune reports.

"Rahm — Assume you saw our news. We look forward to diving in deeper on Chicago's proposal," Carney, who is Amazon's senior vice president of corporate affairs, wrote January 18. "As I think I mentioned before, everyone here was impressed with the proposal your team put together. Many thanks, Jay."

Emanuel responded with a reference to a real-estate rankings list published by Redfin.

"Yes aware. Thanks," he wrote. "Hope you saw the recognition of our neighborhoods (7) that have it all!"

Carney wrote back: "I did. Good stuff."

Then Emanuel replied: "Whose (sic) your daddy? Talk soon. Hope family is good."

The email exchange reveals that Emanuel has a direct line of communication with Amazon, as Chicago remains in the running for the site of the company's second headquarters, which is expected to bring as many as 50,000 high-paying jobs and a $5 billion investment by Amazon.

Carney and Emanuel have previously worked together. Carney was Vice President Joe Biden's communications director while Emanuel was President Barack Obama's chief of staff.

The Tribune obtained the emails through a Freedom of Information Act request.