Israel's military on Tuesday responded to accusations by the World Health Organization (WHO) that its forces attacked the UN agency's facilities in central Gaza and detained staff members. The military said soldiers came under fire in the city of Deir al-Balah on Monday and returned fire in the direction the shots originated.

Context: Deir al-Balah had been an informal refuge for Palestinians escaping other parts of Gaza, and huge tent camps have sprung up in the city. The city also hosts warehouses for the U.N. as well as guesthouses for U.N. staff.

Israeli troops for the first time Monday pushed into areas of a central Gaza city where several aid groups are based, in what appeared to be the latest effort to carve up the Palestinian territory with military corridors.