The once great empire of Srivijaya had been weakened by numerous raids launched by the Chola Empire in the 11th century and was entering its terminal decline by the end of the 13th century, when it caught the attention of the expansionist Javanese King, Kertanegara of Singhasari. In 1275, Kertanegara launched the Pamalayu expedition to overrun Sumatra and by 1288, Singhasari naval expeditionary forces successfully sacked Jambi and Palembang and brought Srivijaya to its knees. Over the course of the next decade, the Majapahit Empire would emerge as the regional hegemon in the wake of the Mongol invasion of Java.