Frederick Nossal, 51, an information officer of the World Bank, died in Belgrade, Yugoslavia, Saturday after a fall from his hotel bedroom. A bank official in Washington said no further details of his death were available.

Mr. Nossal joined the World Bank in Washington in 1971. He was in Yugoslavia, leading a press tour of development projects there and preparing for the annual session of the World Bank and International Monetary Fund in Belgrade.

Mr. Nossal was a newspaperman for many years before joining the bank. In 1959, he opened a bureau in Peking for the Toronto Globe and Mail. It was the first western news bureau to be established in the Chinese capital after the Communist take over in 1949.Mr. Nossal worked in Peking for eight months and then moved to Hong Kong when the Chinese government refused to renew his visa. He wrote a book about his experiences called "Dateline Peking."

He began his newspaper career in 1944 with the Sydney Sun in Australia. He then worked for the Melbourne Herald and Reuter news agency before joining the Toronto Globe and Mail.

He was the Asia editor of the Toronto Telegram based in Hong Kong before joining the World Bank. His articles were widely syndicated in Canada, Australia, Britain and the United States.

Mr. Nossal was born in Vienna, Austria. He was a Canadian citizen.

Survivors include his wife, Audrey, of the home in Potomac; two daughters, Nicole and Michelle, both of Toronto, and two sons, Ian Shane, of Ottawa, and Kim Richard, of Hamilton, Ontario.