(CNN) -- Five Indian soldiers were killed in an attack on the Line of Control in Indian-administered Kashmir early Tuesday, India's government said. Indian Defence Minister AK Antony told parliament the ambush was carried out by approximately 20 "heavily armed terrorists along with persons dressed in Pakistan army uniforms." The chief minister of Indian-administered Kashmir denounced the attack on Twitter. "These incidents don't help efforts to normalise or even improve relations with Pak & call in to question the Pak Govt's recent overtures," Omar Abdullah tweeted Tuesday morning. Pakistan denied playing a part in the attack. "No such incident has taken place," the military said, while Pakistan's ministry of foreign affairs also rejected the claim.
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NEW: Indian official: Terrorists, people in Pakistan army uniforms carried out ambush
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Pakistan denies playing a part in the attack
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The two neighbors have had a cease-fire along the de facto border
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India says Pakistan has violated that 33 times between February and July
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