Facebook CEO Mark Zuckerberg visited Samsung Electronics Co.'s key factory complex in Suwon, south of Seoul, industry sources said Wednesday, a day after meeting with company officials.

Although Samsung has not formally provided confirmation, Zuckerberg is believed to have met with Samsung's heir-apparent Lee Jay-yong during his visit to Samsung Group's Seoul headquarters Tuesday evening.

The head of the world's largest social network firm is said to be accompanied by around 40 executives, an indication that the two would engage in broad discussions on business cooperation.

Industry watchers say Samsung and Facebook may exchange ideas on cooperating in the virtual reality business, with the South Korean company, the world's No. 1 maker of smartphones, recently rolling out Samsung Gear VR. 

Providing views that rotate 360 degrees in all directions, the device provides a life-like experience to users. It is currently linked to the Galaxy Note 4 through a micro-USB.

Facebook acquired Oculus VR earlier this year, reflecting the firm's efforts to tap the virtual reality business.

"Virtual reality was once the dream of science fiction. But the internet was also once a dream, and so were computers and smartphones. The future is coming, and we have a chance to build it together," Zuckerberg said in March upon the acquisition of Oculus VR.

In June last year, Zuckerberg also visited Seoul, meeting with Lee as well as President Park Geun-hye. (Yonhap)