The constable was handed over to the Border Security Force (BSF) by Pakistan Rangers at 10:30 am at joint check post (JCP) Attari in Amritsar district (opposite Pakistan's Wagah), a BSF spokesperson said.

A picture of the jawan released by the force showed a bearded Shaw with ruffled hair, and wearing a dark green round-neck T-shirt.

"Today at 1030 hours Constable Purnam Kumar Shaw has been taken back from Pakistan by BSF at Attari-Wagah border," the spokesperson said.

Shaw had "inadvertently" crossed over to Pakistan territory while on operational duty in the area of Ferozepur sector on April 23 around 1150 hours and detained by Pak Rangers, he said.

Officials told PTI that the jawan will undergo a full body check-up and medical test followed by a counselling and 'debriefing' session where he will be asked "relevant questions" by the BSF officials about his 21-day detention by the Rangers.

The jawan, belonging to the 24th BSF battalion, will not be drafted in active duty and will also be part of an official inquiry instituted by the Punjab frontier of the BSF to look into the sequence of his apprehension by the Rangers and find lapses, if any, they said.

The spokesperson said the handover of the jawan at the border "was conducted peacefully and in accordance with established protocols."

"With the consistent efforts of BSF through regular flag meetings with Pakistan Rangers and through other communication channels, the repatriation of BSF Constable has become possible," he said.

Shaw's apprehension by the Pakistan Rangers happened a day after the Pahalgam terrorist attack in which 26 people were killed.

The jawan was part of the 'Kisan Guard' that was deployed for protection of Indian farmers, who till their land ahead of the fence, and the trooper apparently "mis-calculated" the alignment of the IB and stepped to rest under a nearby tree from where he was apprehended by the Rangers, officials had said.

Shaw hails from Rishra in Hooghly district of West Bengal and his wife has been speaking to BSF officers and the press seeking the whereabouts of her husband and his early release in wake of the military offensive between India and Pakistan following Operation Sindoor.