By IANS

Srinagar : At least 15 Amarnath pilgrims were injured, three seriously, in a powerful grenade explosion Saturday at Pahalgam, a base camp of the annual pilgrimage in south Kashmir.

Police said militants exploded a hand grenade inside the Pahalgam gurdwara, injuring 15 people bound for the cave shrine in the Himalayas. The gurdwara is a gathering point for pilgrims en-route to the shrine.

"All the injured were taken to Pahalgam hospital and doctors said the condition of three was serious," a police official said.

"The area around the blast site has been thoroughly searched by security forces," he said.

No group has yet claimed responsibility for the explosion, which takes place a day after Srinagar was rocked by six powerful grenade blasts.

This is the second attack in the past week on the pilgrimage that started here June 30.

Earlier this week, one person was killed and 10 injured in a grenade attack at the north Kashmir Baltal base camp of the Amarnath yatra.