Border Security Force (BSF) gave a "suitable reply" and no one was injured on Indian side.
Firing was still going on.
"Pakistan rangers resorted to first small arm fire at 1820 hours and few 82 mm mortar bombs were also fired at our positions at 2145 hours," a BSF spokesman said.
Pakistan Rangers resorted to mortar shelling in Abdullian and Korotana Khurd area of the sector, he said.
Earlier on Sunday evening, Pakistan violated the ceasefire along the IB, as Pakistani Rangers used small arm fire to target Indian posts, which was not retaliated by the BSF.
Sunday's ceasefire violation came within hours of warning by Additional Director General, BSF, Arun Kumar that Pakistan will have to face dire consequences if any BSF Jawan was targeted.
Mr Kumar said that the lull along the border could take "any turn anytime".
On Friday night, Pakistan Rangers had targeted the border hamlets and border outposts (BoP) with mortar shells and opened fire from automatic weapons along the IB in the sector.
During the late night attack, which started around 11 pm and continued till Saturday morning, Pakistan Rangers had used 60 and 81 mm shells in the Korotana Khurd and Budhipur Jattan villages in the RS Pura sector.
Seven Pakistan Rangers personnel and a terrorist were killed and three others seriously injured in a befitting retaliatory action by the BSF as the Pakistani troops had targeted six sectors in Jammu, Kathua, Samba, Poonch and Rajouri districts of Jammu and Kashmir.
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