Twelve people, including seven pilgrims from Uttar Pradesh and Rajasthan bound for the cave shrine at Amarnath, were wounded on Monday when guerrillas chucked a grenade inside their bus in Srinagar.
The blast occurred in Srinagar's Batmaloo area.
A senior police officer said: "Twelve people, including seven pilgrims going to the Amarnath cave shrine, were wounded when separatist militants tossed a grenade at a passing pilgrims' bus in Batmaloo area. The other five wounded in the explosion are civilians."
The bus carrying pilgrims from Uttar Pradesh was going to the Baltal base camp of the pilgrimage in north Kashmir.
Batmaloo is situated barely 500 metres away from the Civil Secretariat, which houses the offices of the chief minister, his ministerial colleagues and senior bureaucrats.
On July 11, eight Bengali tourists were killed in a similar explosion here. That day, four other explosions rocked this volatile city.
Guerrillas have killed 14 tourists and injured three dozen others in a series of blasts this year.