Pakistan's Defense Minister Khawaja Muhammad Asif said in a statement that a military incursion by India was imminent following a deadly militant attack on tourists in Kashmir last week that reignited tensions between the two nuclear-armed countries.
The attack killed 26 people and sparked anger in India, particularly in the long-running religious conflict between Hindus and Muslims.
India accuses the Pakistani government of supporting militant attacks in Kashmir, which has previously been the scene of war.
His ministry is beefing up defenses to prepare for the unexpected. It is a strategic decision that needs to be taken.
Asif said Indian rhetoric is increasing and the Pakistani military has been briefed on a potential Indian attack.
However, India's foreign and defense ministries have not yet issued any statements on the news.
After the Kashmir attack, India said two of the suspected militants were Pakistani nationals. Islamabad officials have denied any role and called for a neutral investigation.