India often accuses Pakistan of sending militants into the Indian-controlled part of Kashmir, often under cover of these types of skirmishes.
The mostly-Muslim mountainous Kashmir region has been a flashpoint of violence between these two neighbors for decades. Both claim the entire region as their own, and the countries fought two full-scale wars over control of Kashmir and some minor skirmishes.
On Saturday, leaders of a Pakistan-based militant coalition held a rally in the city of Muzaffarabad near Kashmir, in which they pledged to continue the fight to gain control of the entire region.
The United Jihad Council is a coalition of 12 anti-India militant groups. Many of the groups were started with the support of the Pakistani government in the 1980s and 1990s to fight India for control of Kashmir. The rally was held to mark the Jan. 5, 1949 call by the United Nations for a referendum on Kashmir's fate.
A 2003 cease-fire ended the most recent round of fighting. Each side occasionally accuses the other of violating it by lobbing mortars or shooting across the LOC.
A number of Pakistani civilians were wounded in November due to Indian shelling, and in October the Indian army said Pakistani troops fired across the disputed frontier, killing three civilians.
But accusations that one side's ground forces actually crossed the LOC are rarer.
Associated Press writer Zarar Khan in Islamabad, Roshan Mughal in Muzaffarabad, and Aijaz Hussain in Srinagar, India, contributed to this report.