Mayor Lyda Krewson said Wednesday that downtown St. Louis, the riverfront north of downtown and East St. Louis will be part of a regional plan being crafted to try to attract Amazon to put its second headquarters here.

“We’ve all come together on that, and those certainly are going to be part of the proposal,” she said of those three locations. “We’re just fine-tuning it right now.”

But she indicated there also will be other elements in the plan from the St. Louis Economic Development Partnership, which will be reviewed next week by the East-West Gateway Council of Governments.

She said officials with the city, St. Louis County and St. Clair County have worked with the partnership — a joint St. Louis-St. Louis County agency — on the proposal.

The partnership has been reviewing more than 27 sites from across the metro area.

Krewson, who was interviewed after she spoke to the St. Louis Airport Commission, said excess runway capacity at St. Louis Lambert International Airport will be a plus in trying to attract Amazon. However, she didn’t explain what would be in the proposal relating to Lambert.

She also said empty office space here could work in the area’s favor.