Several weeks later, he piloted the stolen Jem'Hadar attack ship that transported Damar, Elim Garak, and Kira Nerys to Cardassia Prime for a meeting with Gul Revok and Legate Goris. He informed Damar that orbital traffic control was asking for their security clearance. Fortunately, Garak was able to transmit the right codes. Damar, Garak and Kira transported to the surface to meet with Revok, but not before Seskal wished them good luck. Seskal was then left in charge of the ship.
However, Revok had informed the Dominion of Damar's visit and Seskal and the crew of the attack ship came under fire by the Jem'Hadar and the Breen. Seskal was unable to lower the attack ship's shields to beam Damar's team back. Seskal tried valiantly to return fire, but the ship was destroyed, and he was killed. (DS9: "The Dogs of War")