It stated that when it was hit, the employees were riding in a UN car to the European Hospital close to Rafah.
The UN remained silent about their suspicions regarding the attacker.
According to the Israeli military, preliminary investigation revealed the car was hit in a conflict zone and that its intended path was unknown to it.
A report and social media footage show multiple bullet holes in a designated UN vehicle outside the European Hospital.
The Israel Defense Forces (IDF) acknowledged receiving the report from the UN Department of Safety.
Security (UNDSS), which stated that two of its employees suffered injuries on Monday in the southern Gazan district of Rafah.
The event was being reviewed, the IDF continued.