Rohingya refugees at Da Paing camp in Rakhine State in April. Pic: AP.

UNITED NATIONS (AP) — A top U.N. emergency relief coordinator says she witnessed the worst human suffering she has ever seen in camps for stateless Rohingya Muslims in Burma.

Assistant Secretary-General for Humanitarian Affairs Kyung-wha Kang told reporters Tuesday that because of severe restrictions on their freedom of movement both in camps and isolated villages, many Muslims can’t rebuild their lives in violence torn-Rakhine State. She said they have “wholly inadequate access to basic services including health, education, water and sanitation.”

Kang visited Burma last week to assess the humanitarian challenges. She said authorities argue the camps must restrict free movement for security reasons.

But Kang said freedom of movement is a basic human right. She said the U.N. has urged authorities to expand freedom of movement for Muslims, even with security considerations.