The U.S. reportedly put a hold last week on a weapons shipment to Israel a stunning diplomatic shift as Prime Minister Benjamin Netanyahu prepares to go against the Biden administrations warnings and move forward with a military invasion of the Gazan city of Rafah.

The alleged pause in large shipment of offensive weapons appears to be the first instance of the Biden administration withholding U.S.-made arms from Israel since Oct. 7, when Netanyahu launched a military campaign on Gaza in response to an attack by Hamas militants that killed about 1,200 people and took around 250 hostage, roughly 100 of whom are suspected to still be alive in captivity.

The delivery halt was first reported on Sunday by Axios , citing two unidentified Israeli officials who said the incident raised concerns internally, and led officials within Netanyahus government to try and figure out why the U.S. was holding the shipment. MSNBC confirmed the halt on Monday, citing two senior Biden administration officials familiar with the decision.

The White House, the Pentagon and the Israeli government did not immediately respond to HuffPosts request for confirmation of the alleged halt, and the State Department declined to comment. On Monday, National Security Council spokesman John Kirby did not confirm nor deny to reporters the shipment hold.

Since Israels current military campaign began seven months ago, health officials in the Palestinian territories say soldiers have killed more than 34,000 people, displaced most of the population, destroyed important infrastructure like hospitals and universities, detained and tortured civilians, and created a widespread famine by blocking most humanitarian aid from entering the enclave. Israeli troops and settlers have also been attacking Palestinians in the occupied West Bank, which is not governed by Hamas.

Since Oct. 7, the U.S. has given unconditional support to Israel, sending many of the weapons that soldiers end up using to bomb Gaza. President Joe Biden started a trend of warning Israel about its behavior in Gaza while imposing no consequences on the country for ignoring said warnings making this reported hold in weapons shipment a significant elevation in tensions between Biden and Netanyahu.