Tigress T138 was released in Buxa Tiger Reserve on October 2.
Union Environment Minister Bhupender Yadav released her, with Chief Minister Suvendu Adhikari present.
The Chief Minister said three more tigers would be released in the next two months.
Forest Minister Manoj Kumar Oraon said six tigers in all would be introduced, with five more over three years.
The statements describe different timetables for later releases.
Forest Minister Manoj Kumar Oraon said six tigers in all would be introduced in phases, with five more over the next three years, in 2027, 2028 and 2029.
Other reports said more tigers were expected from Assam’s Manas or Kaziranga reserves.
The reports differ on the pace of the later releases, with the two ministers describing different timetables.
The Chief Minister also announced a tourism centre planned on about 2,000 acres near Jayanti, according to the Free Press Journal.
The release date had been pushed back from an earlier plan because of the monsoon and delays in relocating villages inside Buxa.
Buxa Tiger Reserve lies in the Alipurduar district of north Bengal, close to the borders with Assam and Bhutan.
Reintroduction means releasing animals into an area where the species has disappeared, with the aim of building a population that can sustain itself.
A tiger translocation involves capturing and tranquilising the animal, moving it, and releasing it under monitoring in the new habitat.
Officials have been preparing Buxa for years, and reports mentioned grassland restoration and the release of chital as prey.
A three-year-old tigress identified as T138 was released into the core zone of the Buxa Tiger Reserve in West Bengal’s Alipurduar district on Friday, October 2.
Union Environment Minister Bhupender Yadav released the tigress, with West Bengal Chief Minister Suvendu Adhikari present, according to reports.
The tigress was brought from Bihar’s Valmiki Tiger Reserve in West Champaran district.
Bengal tigress at Pilibhit Tiger Reserve (representative image), Wikimedia Commons, CC0