The US Department of State is investigating several airstrikes carried out by the Israeli Occupation Forces (IOF) in Gaza and Lebanon using white phosphorus, according to a report published by The Wall Street Journal.

The probe by Washington aims to verify whether the IOF used internationally prohibited white phosphorus weapons, supplied by the United States.

Officials stated that the State Department is investigating an airstrike carried out on October 31st in the Jabalia refugee camp, which resulted in the deaths of more than 125 people.

Weapons investigators suspect that Tel Aviv used a 2000-pound bomb in this strike, potentially supplied by the United States, which could constitute a war crime, per The Journal.

Spokesperson Matthew Miller clarified that the Department of State aims “to systematically assess civilian harm incidents and develop appropriate policy responses to reduce the risk of such incidents occurring in the future.”