India and Pakistan agreed to an immediate ceasefire on Saturday, unexpectedly halting the worst fighting in decades between the nuclear-armed neighbors, just when their tit-for-tat strikes appeared to be spiraling out of control.

The neighboring countries exchanged fire for several days after India's missile attack on Pakistan before reaching a ceasefire on Saturday.

Pakistan and India accused each other of violating a ceasefire deal made hours earlier on Saturday following U.S.-led talks aimed at ending the most serious military confrontation between the nuclear-armed rivals in decades.