MOSCOW (AFP)- Russian President Dmity Medvedev hosted talks Saturday between his Armenian and Azerbaijani counterparts in the latest Moscow-mediated bid to reach a resolution to the Nagorno-Karabakh conflict.

No new developments in the negotiations process were announced after the talks.

"The meeting was long and as far as our side was concerned, very constructive," Interfax news agency quoted Kremlin diplomatic adviser Sergei Prikhodko as saying.

"There was a long and, according to our side, very constructive meeting during which some of the remaining open questions were discussed," Prikhodko said.

"Presidents Aliyev and Sargsyan expressed their gratitude to Dmitry Medvedev for his efforts to bring together the positions of Armenia and Azerbaijan," he added.

Armenian President Serzh Sargsyan and his Azerbaijani counterpart Ilham Aliyev had face-to-face talks with other mediators on Friday and met again earlier Saturday at an informal summit of heads of former Soviet states at a Moscow racecourse.

Armenian state-run television quoted Sargsyan as saying earlier that "no document will be signed" in Moscow.

Keen to burnish its credentials as a powerbroker, Russia has been mediating talks between the two countries over the enclave, now controlled by ethnic Armenian separatists backed by Yerevan.

At the Group of Eight summit in Italy last week, Russia, France and the United States, making up the so-called Minsk group of mediators, urged Armenia and Azerbaijan to quickly iron out their remaining differences and reach a settlement based on an updated version of the Madrid Principles.

Prikhodko said Saturday that Medvedev, who has brought the two sides together four times since November, "confirmed the goodwill of Russia, as co-chair of the Minsk group, in efforts to find mutually acceptable solutions in the Karabakh conflict."