Japan Tobacco Inc.'s international unit said it plans to invest as much as €25 million ($36 million) to increase cigarette output in Romania by next year.

The first new production lines at a factory in Bucharest will be operational in the second half of this month, Japan Tobacco International said in an emailed statement Thursday. The unit plans to complete the investment in the first part of next year, it said.

Japan Tobacco, Asia's biggest listed cigarette maker, said Friday in an emailed statement there has been no final decision on the investment. It has spent €20 million since 2009 in increasing the Bucharest factory's output.