Several dozen Democratic members of Congress, including former speaker Nancy Pelosi, have sent a letter to U.S. President Joe Biden and Secretary of State Antony Blinken calling for a halt on arms transfers to Israel following an Israeli strike in Gaza that killed seven staffers of the World Central Kitchen, including a dual U.S. citizen.

“In light of this incident, we strongly urge you to reconsider your recent decision to authorize the transfer of a new arms package to Israel, and to withhold this and any future offensive arms transfers until a full investigation into the airstrike is completed,” the House representatives wrote.

“We also urge you to withhold these transfers if Israel fails to sufficiently mitigate harm to innocent civilians in Gaza, including aid workers, and if it fails to facilitate — or arbitrarily denies or restricts the transport and delivery of humanitarian aid into Gaza,” they said.