"Pakistan Rangers resorted to unprovoked firing at BSF (Border Security Force) outposts in R.S. Pura sector at 3.10 a.m. They used small automatic weapons," a senior police officer said here.
"The firing took place in the vicinity of the Gharana Wetland Bird Reserve."
The reserve is the winter home of migratory birds from different locations across the world.
"No casualty or damage occurred on our side," the officer added.