Ferozepur/New Delhi, April 25 -- A Border Security Force (BSF) constable, Purnab Kumar Shaw, was detained by Pakistan Rangers on Wednesday after he accidentally crossed the zero line in the Ferozepur sector, officials said on Thursday.

The incident -- which came to light on Thursday -- came amid heightened alert at the international border with Pakistan and on a day India unveiled a raft of punitive diplomatic measures against Pakistan over the brazen terror attack near Pahalgam that killed 26 tourists. "The jawan inadvertently entered Pakistan territory and was taken into custody. All efforts are on to ensure his safe and early return," said BSF Punjab Frontier inspector general Atul Fulzele.

Two flag meetings between the two forces - on...