He said Indian troops guarding the border took positions and retaliated, resulting in exchange of firing.
The firing exchanges were occurring intermittently when the reports last came in from the area, he said, adding that this was the fourth ceasefire violation this month.
There was no loss of life or injury to anyone in the firing, Acharya said.
Prime Minister Manmohan Singh and UPA chairperson Sonia Gandhi are on a two-day visit to the state.
Earlier in June, a Junior Commissioned Officer was killed when Pakistan opened heavy fire with automatic weapons and rockets on Indian posts along the LoC in Poonch sector.
Pakistani troops had also opened indiscriminate firing in the Poonch sector in which a civilian was injured after an infiltration bid was foiled by Indian troops. They had opened small arms firing on Indian posts in Nangi Tikri forward area along LoC in Krishnagati.
Last month, Pakistani troops had pounded Indian posts along LoC in the Poonch sector with rockets. A Brigadier and two jawans were injured when Pakistani troops opened fire on Indian positions along the LoC in Tutmari Gali sector in Jammu and Kashmir.