Pakistan's military said the prime minister had called a meeting of the National Command Authority, a top body of civilian and military officials, which oversees decisions on its nuclear arsenal.
In Washington, the White House said US Secretary of State Marco Rubio was in constant contact with the leaders of both countries.
India’s principal objective is to pressure Pakistan to disengage from patronizing Islamist radicals with universalist pretensions.
With shifts in global power accelerating, conflicts such as the one between India and Pakistan are more important.
The Indian army also said Pakistani troops had resorted to "numerous cease fire violations." Pakistan denied the accusations.
We must be vocal in supporting India’s right to defend itself. We must push for international condemnation of Pakistan’s terror infrastructure.
The sharp rhetoric and tightened security come against the backdrop of a decades-long rivalry between India and Pakistan, which have fought three wars since gaining independence in 1947.
"Indian drones continue to be sent into Pakistan airspace...(India) will continue to pay dearly for this naked aggression," military spokesperson Ahmed Sharif Chaudhry said.
Daniel Pearl, the Wall Street Journal's South Asia bureau chief, was beheaded on camera by al-Qaeda affiliated Pakistani terrorists in 2002.
Araqchi's visit to India was pre-planned to attend a joint economic commission between the two countries.