The United Nations Relief and Works Agency for Palestine Refugees (UNRWA) announced today, Tuesday, that unexploded bombs weighing a thousand pounds (about 460 kg) were found inside schools after the occupation army withdrew from the city of Khan Yunis in the southern Gaza Strip.

UNRWA said that UN agencies led an “assessment mission” in Khan Yunis after the withdrawal of Israeli forces from the besieged city last week.

According to the agency, it found “major challenges in working safely due to the presence of unexploded ordnance, including thousand-pound bombs, inside schools and on roads.”

"Thousands of internally displaced people need a range of life-saving assistance, including health, water, sanitation and food," she added in a statement.

The United Nations said earlier this month that it would take "millions of dollars and many years to clear the Strip of unexploded ordnance."

“We operate according to the general rule that 10% of munitions do not perform as designed,” UNMAS Chief Charles Birch said in a statement earlier this month.

He added, "We estimate that starting to clear Gaza will require about $45 million."

In this context, UNRWA said that “there has been no tangible change” in the volume of humanitarian aid entering the Gaza Strip.

It stated in a statement that “181 aid trucks cross into Gaza daily” through land crossings with Israel and Egypt this April.

It noted that these trucks "are still far below the operational capacity of both border crossings and the goal of 500 trucks per day."