BSF opened fire at a Pakistani drone after spotting it near the International Border (IB) in Kanachak sector of Jammu and Kashmir, a senior official said on Saturday. A blinking red light was observed by the troops coming from Pakistan side in Kanachak area at 9.40pm on Friday, he said. Alert BSF troops fired at it, he said. The troops launched a search operation in the area, which is still going on, he said.