Jakarta, Dec. 3 -- Indonesia is investigating eight companies in North Sumatra for suspected environmental violations following the deadly floods and landslides that hit the region, Deputy Environment Minister Diaz Hendropriyono said Wednesday.

"We are looking into them," he told reporters after attending a ceremony for the release of Cesium-137-free certified shrimp exports at Tanjung Priok Port in Jakarta.

He said the companies operate in the Batang Toru area of South Tapanuli, North Sumatra, and will undergo a full assessment by the Environment Ministry. He did not identify the firms.

Hendropriyono said officials will examine a range of factors, including land conditions, vegetation, natural contours, and compliance with licensing a...