One of three people critically wounded after a hand grenade was thrown by suspected separatist rebels into a crowded market in India's insurgency-wracked northeast has died, police said Saturday. Friday's explosion was the second in Gauhati, the capital of Assam state, in the past three days. Two people were killed and another 14 wounded in a blast Wednesday. Assailants riding a motorbike lobbed the grenade into the market in the heart of Gauhati, where the separatist United Liberation Front of Asom, or ULFA, has been waging a bloody battle for autonomy, said R.N. Mathur, the director-general of state police.