Pakistan Rangers overnight targeted Border Security Force (BSF) posts on the International Border in Jammu, a source said Wednesday."Pakistan Rangers targeted some BSF outposts in R.S. Pura sector of the International Border at 9.30 p.m. yesterday (Tuesday)," a BSF source told IANS here."They used small weapons and automatics to target our positions," the source said, adding India retaliated using similar calibre weapons."Firing exchanges between the two sides continued for nearly two hours. No casualty or damage has been reported from our side," the source added.There was calm on the International Border in Jammu and Kashmir during the three-day stay of the US President Barack Obama in India.The ceasefire violation by Pakistan came hours after Obama left for Saudi Arabia.