Is Amazon’s second major headquarters site headed to Boston? The Boston Globe says the online retailer may have dropped a clue. It is in talks to lease 500,000 square feet of offices in Boston’s Fort Point Channel neighborhood, already a tech company hot spot.

Several North Carolina regions, including the Triangle, Charlotte, and the Triad, submitted packages with various incentives to lure HQ2 to the state. It received 238 proposals, including from Boston, Washington, DC, Dallas, Chicago, and New York.

The Globe noted that Amazon said the first phase of its HQ2 would encompass 50,000 workers in a $5 billion, 8-million square foot campus by 2027.

Amazon employs about 5,000 people in the Boston metro region now and has offices in the Kendall Square area of Cambridge near MIT and another in Boston’s Back Bay. It is developing 150,000 square feet of new space in the Fort Point Channel area. It is negotiating for up to 1 million square feet of additional space, the Globe reports.

Amazon said it was targeting a metro area with at least 1 million residents and a stable and business-friendly environment.

A Dis claims Atlanta is the frontrunner with Austin and Boston runners-up.