The call comes after the death of eight at the weekend.
The international community must do more to ensure the safety of civilians and humanitarian workers in Gaza, a leading NGO body has said.
Bond, the UK network for organisations working in international development, has spoken out after the death of aid workers in Gaza.
Eight workers for a UK-based charity were killed on Saturday following an airstrike by Israel.
The Al-Khair Foundation, which has an office in Glasgow, said the team had been “killed in violation of the agreed ceasefire in a drone airstrike”.
The charity, which is a Bond member, called for an investigation and for the UK Government to support international efforts to protect aid workers.
This call has been backed by the NGO network, who said international humanitarian law must be upheld.
A Bond spokesperson told TFN: “Our thoughts go out to the families, colleagues and friends of the humanitarian workers who have lost their lives while trying to provide much needed help in Gaza.
“These workers risk their lives every day to reach people in dire need of support, they must be able to do this safely, in line with international humanitarian law.
“It is also deeply concerning that there are violations of the ceasefire and more must be done by the international community to ensure the safety of both civilians and humanitarian workers.
“We urge all parties to uphold their obligations under international humanitarian law.”