The free paper informed readers Wednesday that it was its final day.
"After 19 years in Boston, we are sad to announce the closure of Metro Boston, effective today," the note read. "We realize this may seem sudden, but after our New York and Philadelphia editions were sold, we no longer have access to centralized resources, and a difficult decision had to be made."
According to the Boston Business Journal, Metro Boston had a circulation of 300,000 in 2005, but dipped radically to 50,000 of late.
Publishers Daily reported earlier this week that New York-based publisher Schneps Media has acquired the assets of daily commuter newspapers Metro New York and Metro Philadelphia.
Metro New York merged with New York City's other free, daily paper amNew York, and rebranded as amNewYork Metro.
Former Metro executives Ed Abrams and Susan Pfeiffer will serve as publisher and associate publisher for New York City and Philadelphia, respectively.
Staff at Metro New York and Metro Philadelphia were laid off last Friday, according to the New York Post. Schneps will offer jobs to some of the let-go employees.