A unit of BNY Mellon Investment Management has purchased Two Liberty Square, an 11-story office building in Boston’s Financial District, said a broker involved in the transaction.

The broker is Jones Lang LaSalle’s Capital Markets group.

An affiliate of AEGON Asset Management sold the building for about $17.5 million to URDANG, the real estate investment specialist for BNY Mellon Investment Management.

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Two Liberty Square is currently 81 percent occupied with nine tenants.

Built in 1913 in the Beaux Arts style, Two Liberty Square was substantially renovated in the late 1990s.

A lot has been happening in the Financial District lately.

A story in Friday’s Globe noted that one of the biggest buildings in the neighborhood, 100 Federal St., is exploring plans to open multiple restaurants and shops on its heavily traveled plaza.

Earlier this month, another Globe story noted that Brown Brothers Harriman & Co., the oldest privately held financial institution in the country, is moving to a historic building in Boston’s Financial District, signing one of the largest leases in the city in recent years.

Brown Brothers will occupy 410,000 square feet at 50 Post Office Square.

The Financial District has attracted several new office tenants in recent months, including the online payment giant PayPal, Partners HealthCare, and several technology and digital communications firms.