Explosion rips through Kashmir

Security has been beefed up in Srinagar in the wake of violence in the area

SRINAGAR, India (CNN) -- A massive explosion has ripped through a government building in Kashmir, killing at least three and critically wounding nine others, according to police and eyewitnesses.

The attack occurred in Kashmir's Anantnag district, 80 km southeast of Srinagar, the summer capital of the state.

The building was used as a camp by pro-India militants, also referred to as counter-insurgents by the government of Jammu and Kashmir.

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Some of these militants' family members also lived in the building, which was leveled in the explosion, police said.

The blast came four days after an attack by suspected Muslim militants in Jammu City that killed at least 27 people and wounded more than 30.

Indian Deputy Prime Minister Lal Krishna Advani says Pakistan must tear down militant infrastructure as well as halt infiltration into Indian-controlled Kashmir before tension between the two nuclear rivals could ease. (Full story)

India has accused Pakistan of fomenting Islamic militancy in Jammu and Kashmir.

About a dozen militant groups are fighting New Delhi's rule in Kashmir and at least two pro-government militant groups are helping security forces combat militancy in the region.

Officials say more than 33,000 people have been killed in the rebellion in Kashmir since 1989.

-- Mukhtar Ahmed contributed to this report