The United States has suspended food aid to North Korea.
A Pentagon official says the North Korean government can't be trusted to deliver the aid to those who need it.
Under a deal reached in February, Pyongyang had agreed to a partial nuclear freeze and the suspension of missile tests in return for US food aid, the ABC reports.
But North Korea's insistence on going ahead with what it calls a satellite launch for scientific purposes in mid-April has scuppered the deal.
The US and other countries say the launch is highly provocative and is actually a long-range missile test of a type banned by the United Nations.