Citing the official, who was not identified, the Washington Post reported Tuesday the Pakistani military has notified U.S. officials of the plan.
"It could be any day," the Pakistani official was quoted as saying.
A delegation of Pakistani officials, including the defense secretary, Asif Yasin Malik, has been holding meetings with U.S. officials in Washington and CIA Director John Brennan made a low-profile trip to Pakistan last week, the Post said.
Sartaj Aziz, national security adviser to Prime Minister Nawaz Sharif, said Monday the Pakistani Cabinet planned discussions this week on a possible military response.
"Dialogue with the Taliban has derailed and the writ of the state will be established in the region," he said.
Pakistani army jets attacked suspected militant hideouts and training centers along the Afghan border Tuesday, killing 30 insurgents, a military official said.
The airstrikes targeted areas between North Waziristan and South Waziristan agencies where militants have training centers for recruits and suicide bombers, Anadolu Agency reported.
The official said 15 terrorists were killed in Dattakhel, the third-largest community in North Waziristan, and 12 were killed in Shawal. Three suspected militants were killed in the Garyoum area of North Waziristan.
Anadolu Agency said more than 100 militants have been killed in North and South Waziristan since the peace talks between the government and Taliban leaders collapsed last week.