An investigation by the open-source research group Forensic Architecture, in partnership with Al Jazeera’s Fault Lines program, reveals new evidence that Israel has systematically and deliberately attacked aid workers and sites of humanitarian assistance in Gaza.

When aid does make it into Gaza, Israel also creates deadly obstacles for the civilians who need it. Data examined by Forensic Architecture and Fault Lines unearthed more than 40 attacks by Israel on people seeking aid, as well as attacks on key infrastructure for the distribution of food and medicine, including schools and bakeries.

“As we looked into more of these attacks, we started to see they were systematic in nature and not arbitrary,” Peter Polack, a researcher for Forensic Architecture, told Fault Lines.

Researchers geolocated and mapped videos of Palestinians in Gaza who had been targeted under similar circumstances. They found that the attacks were concentrated at locations where civilians would gather to receive aid. The consistency of these military attacks indicated they were intentional, according to researchers.