An affiliate of Greenwood Racing Inc. has acquired this 22-acre site near Indian Head Highway and Old Fort Road in Fort Washington for a proposed Prince George’s County casino. (John Wagner/The Washington Post)

Maryland won’t pick a winning Prince George’s County casino site for several months, but one of the three bidders has moved forward with a $1.4 million land purchase.

An affiliate of Greenwood Racing Inc. last month acquired a 22-acre site near Indian Head Highway and Old Fort Road in Fort Washington, according to a deed filed with the Circuit Court for Prince George’s County.

Greenwood, which owns the Parx casino outside Philadelphia, was a surprise bidder in May for a lucrative state license to build and operate Maryland’s sixth casino in a swath of western Prince George’s.

MGM Resorts also bid to construct a casino at National Harbor, while Penn National Gaming proposed a gaming facility at Rosecroft Raceway in nearby Fort Washington.

Penn owns its site, while MGM has the blessing for its project from the developers of National Harbor, the 300-acre mini-city on the banks of the Potomac River.

Maryland regulators are conducting background checks on the three applicants, with the aim of choosing a winning bidder by the end of the year. The new casino could open by 2016.

Greenwood has said that its $800 million Parx Casino Hotel & Spa in Prince George’s would offer many of the same amenities as its casino outside Philadelphia, including live entertainment and “best-in-class branded restaurants and bars and lounges.”

The site the company has chosen in Fort Washington is ringed by several rental properties but otherwise is vacant.

Jennifer Jenkins contributed to this report.