JAPANESE PLOT IN HAWAII SEEN

WASHINGTON, Saturday, Sept. 20.--(UP)--Representative Martin Dies, Democrat, Texas, chairman of the House committee investigating un-American activities, said tonight that President Roosevelt has asked him to defer a full-dress investigation of Japanese espionage on the West Coast and that he would comply.

Presumably the request was made because the inquiry might affect adversely the progress of Japanese-American diplomatic conversations, Dies said.

Dies said that the inquiry would have revealed many sensational facts.

Committee agents, Dies said, had lined up witnesses ready to testify that:

Officials of the Japanese government have developed plans to spread yellow fever in the Hawaiian Islands in event of war with the United States.

A Japanese fishing fleet of some 600 boats is stationed off the California Coast, manned by Japanese naval reserve officers, and carrying equipment which could convert the ships immediately into minelayers.

The Tokyo government maintains a closely-knit organization to check up on the activities of Japanese in this country and keep them in line for possible use as espionage and sabotage agents.

Sabotage has been committed by Japanese agents against industrial plants on the West Coast.