More information into claims a British-Israeli hostage has died in Gaza at the hands of Hamas is being urgently sought by the Foreign Office. Last night the Palestinian militant group released a video saying that Nadav Popplewell, who was taken hostage during its October 7 attack on Israel, died after being wounded in an Israeli airstrike a month ago. It blamed Israel for the death, saying it was unable to give Popplewell emergency treatment due to hospitals having been destroyed in the area. No evidence has been provided by Hamas to verify the claims. A spokesperson for the Foreign, Commonwea…