UPDATE 1-Nokia buys social travel network Dopplr

* Buys social network for international travellers

* To run service separately from own offering

* Price "a fraction" of 10-15 million euros estimate

(Adds detail, background)

HELSINKI, Sept 28 (Reuters) - Nokia (NOK1V.HE) said on Monday it has acquired Dopplr, a social network for travellers, to strengthen its push into offering internet services.

The deal is the latest acquisition for the world's top cellphone maker in internet services as it seeks new growth areas outside the maturing handset market.

Nokia said it would continue to run Dopplr separately from its current services offering.

Nokia bought the company from private shareholders. Dopplr was co-founded and led by Marko Ahtisaari, who used to work at Nokia and is the son of Nobel Peace Prize winner Martti Ahtisaari.

A Nokia spokeswoman told Reuters the price "was a fraction" of the 10-15 million euros ($14.7-$22.0 million) estimate mentioned in reports. (Reporting by Tarmo Virki; Editing by Dan Lalor) ($1 = 0.6810 euro)