Pakistan's information minister said the country had "reliable intelligence" and India intends to launch a military strike within the next 24 to 36 hours.
Attaullah Tarar's comments were posted in India accused of Pakistan's support for militants, behind which the Indian-managed Kashmir attack killed 26 tourists last week. Islamabad refuses the charges.
Tarar said India intends to use the attack as a "false excuse" for strikes, and that "any such military adventure in India will be positive and decisively responded."
The BBC has contacted the Indian Foreign Ministry for comment.
On the disputed territory, the attack near the tourist town of Pahalgam was the deadliest attack on civilians for two decades. Both India and Pakistan claimed the region and fought two wars for it.
In recent days, troops from both sides have exchanged intermittent small arms fires.
People have responded to whether India will respond to Pakistan’s military strikes, as they did after the deadly radical attacks in 2019 and 2016.
Authorities said last week that they conducted an extensive search in India-managed Kashmir, which detained more than 1,500 people for inquiries. Since then, more and more people have been detained, although the figures are not yet clear.
Authorities demolished the houses of at least 10 suspected militants. At least one was reportedly related to the suspect mentioned in the shooting.
The entire claim of the Kashmiris as India and Pakistan are completely but only partially managed, and since their division in 1947, the two nuclear-weapon states have been flashpoints between the two nuclear-weapon states.
Since 1989, Indian-managed Kashmir has carried out armed insurgency under Indian rule, with militants targeting security forces and civilians.
India has not named any group it suspected of attacks in Pahalgam, and it is not clear who did it. A little-known group called the “Resistance Front,” the group initially claimed the shootings had been carried out, which denied the statement of participation. The front is reportedly affiliated with Pakistan's radical organization Lashkar-e-Taiba.
Indian police have appointed three of the four suspected attackers. They said two were Pakistani nationals, one from India who runs Kashmir. There is no information about the fourth person.
Many survivors say the gunmen are specifically targeting Hindus.
The attack sparked widespread anger in India, with Prime Minister Narendra Modi publicly saying that the country will hunt suspects “until the end of the earth” and that those who plan and conduct the plan will “will be under their imagination,”.