Sri Lanka, Dec. 14 -- Severe floods and landslides in Indonesia's Sumatra have killed more than 1,000 people, rescuers said, as authorities step up relief operations following weeks of torrential rain.

The disaster, which has hit the northwestern island of Sumatra over the past fortnight, has also injured more than 5,400, the National Disaster Mitigation Agency said in its latest toll.

The deadly torrential rains are one of the worst recent disasters to strike Sumatra, where a tsunami wreaked havoc in 2004 in Aceh province, which lies at the northern tip of the island.

The final toll is expected to rise, with the disaster agency reporting 218 people are still missing.

With vast tracts of territory hit, 1.2 million residents have been ...