Inscriptions and historical sources assert that the Medieval Chola Emperor Rajendra I sent a naval expedition to Indochina, the Indonesia and Malay Peninsula in 1025 in order to subdue Srivijaya.

[6] The stele states: (Who) having despatched many ships in the midst of the rolling sea and having caught Sangrāma-vijayōttunga-varman, the king of Kadāram, together with the elephants in his glorious army, (took) the large heap of treasures, which (that king) had rightfully accumulated; (captured) with noise the (arch called) Vidhyādharatorana at the "war gate" of his extensive city, Śrī Vijaya with the "jewelled wicket-gate" adorned with great splendour and the "gate of large jewels"; Paṇṇai with water in its bathing ghats; the ancient Malaiyūr with the strong mountain for its rampart; Māyuriḍingam, surrounded by the deep sea (as) by a moat; Ilangāśōka (i.e. Lankāśōka) undaunted in fierce battles; Māpappālam having abundant (deep) water as defence; Mēviḷimbangam having fine walls as defence; Vaḷaippandūru having Viḷappandūru (?

[8] George Coedès' Le Royaume de Sri Vijaya published in 1918 after several years of research, rejected both the theories and provided the first convincing description of Rajendra Chola I's conquest of Southeast Asia.

In 1006 CE a Srivijayan Maharaja from Sailendra dynasty, king Maravijayattungavarman, constructed the Chudamani Vihara in the port town of Nagapattinam.

[5] While some scholars opine that the campaign was undertaken to establish Chola dominance over the seas of South-East Asia, other suggest that it might have been a war of plunder.

[12] After learning of Suryavarman's alliance with Rajendra Chola, the Tambralinga kingdom requested aid from the Srivijaya king Sangrama Vijayatungavarman.

[15] Talaittakkolam is believed to be the same as Takkola mentioned by Ptolemy as a trading emporion on the Golden Chersonese, and identified with Trang or the modern-day city of Takuapa in the Isthmus of Kra.

[10] Indian historian V. R. Ramachandra Dikshitar suggests that Tamil traders of the Chola period might have had a knowledge of Australia and Polynesia.