Lý Nhân Tông
The area around Vijaya was probably one of earliest landfalls of the Cham people in what is now Vietnam. However, its architecture implies that it did not become important until the 11th or 12th century. Records suggest that there was an attack on Vijaya's citadel from Vietnam in 1069 (when Vietnam was ruled by Lý Nhân Tông) to punish Champa for armed raiding in Vietnam. The Cham king Rudravarman III was defeated and captured and offered Champa's three northern provinces to Vietnam (present-day Quảng Bình and Quảng Trị provinces).