Zuckerberg spent Christmas Eve in the popular tourist destination Ha Long Bay, local official Trinh Dang Thanh says.

State-run media say Zuckerberg arrived in Vietnam on Dec. 22.

Zuckerberg spent Christmas Day at an ecolodge in the northern mountain town of Sapa and rode a buffalo, said Le Phuc Thien, deputy manager at Topas Ecolodge.

Zuckerberg, Facebook’s 27-year-old CEO, founded the popular social networking site in 2004.

Vietnam’s aggressive Internet censors block access to Facebook and other websites, but young Vietnamese easily bypass the restrictions.