Amazon has been considering locating its second headquarters in Boston, a person briefed on the matter told Bloomberg. That push is coming from "several senior" Amazon executives, Bloomberg's Spencer Soper reports.

Why it matters: Amazon says its new headquarters will cost $5 billion and create 50,000 jobs over about 15 to 17 years.

A source briefed on the matter said Boston's advantages include its proximity to Harvard and MIT, direct flights to Seattle and Washington, D.C. and a lower cost of living than some other big cities. Boston Mayor Marty Walsh was enthusiastic last week about Amazon's search, tweeting that it was "an incredible opportunity."

Go deeper:

• Other contenders for the second headquarters
• The bidding process

Update: Amazon has now replied to the report on Twitter saying, "Bloomberg is incorrect - there are no front-runners at this point. We're just getting started & every city is on equal playing field"