NEW DELHI – India on March 14 ended the preventive detention of prominent Ladakh activist Sonam Wangchuk, freeing him six months after he was held over protests in the Himalayan region.

Wangchuk, 59, an environmental advocate who became a key figure in Ladakh’s movement for greater autonomy, was held in September and later charged under India’s National Security Act following protests that left four people dead and dozens wounded.