ATLANTIC CITY - Atlantic City's eight casinos saw their revenue increase by 5.3 percent in May compared with a year ago.

The casinos won $208.6 million from gamblers last month.

The numbers were aided by $12.5 million in Internet gambling winnings, an increase of more than 19 percent over May 2014.

But when the three casinos that were operating in May 2014 but have since closed are included in the calculations, Atlantic City's May 2015 revenue was down 9 percent from a year ago.

Five of the currently operating casinos saw increases last month.

The closing last year of the Atlantic Club, Showboat, Revel and Trump Plaza reduced capacity in the Atlantic City market, and have helped the surviving casinos do better with less competition.