A strike in the northern Gaza Strip killed a sister of Ismail Haniyeh, the political leader of Hamas, and her family on Tuesday, the armed group and a Gazan rescue official said.

Hamas confirmed the death of Mr. Haniyeh’s sister, Zaher Haniyeh, in a statement. The Israeli military said it was aware of the reports but could not “currently confirm” that it had struck the Haniyeh family home.

Mr. Haniyeh, who heads the Hamas political bureau from exile in Qatar, is a longstanding political leader of the group that governs the Gaza Strip and that launched the deadly Oct. 7 attack on Israel.

Mahmoud Basal, a spokesman for the Palestinian Civil Defense, said that emergency rescue crews had removed the bodies of Mr. Haniyeh’s sister, her husband and their eight children from their home in the Shati neighborhood in northern Gaza, which was demolished in the strike.

An Israeli airstrike in April killed three of Mr. Haniyeh’s sons and three of his grandchildren while they were traveling in a car in Gaza. The Israeli military confirmed the strike and said the sons were active in Hamas’s military operations.

At the time, Mr. Haniyeh did not specify his sons’ roles in the group but called them martyrs. He said that 60 members of his extended family had been killed by Israel over time.