An official has said an Israeli attack that targeted Hamas leaders in Qatar this week will not change the Palestinian group’s terms for ending the conflict in Gaza, Reuters reports.

In a televised address, Hamas official Fawzi Barhoum said the strike targeted the group’s negotiating delegation while they were discussing a new ceasefire proposal delivered by the Qatari prime minister just a day earlier.

“At the moment of the terrorist attack, the negotiating delegation was in the process of discussing its response to the proposal,” he said.

Barhoum reaffirmed Hamas’s key demands: a full ceasefire, the withdrawal of Israeli forces from Gaza, a real prisoner-for-hostage exchange, humanitarian relief and reconstruction of the enclave.