Indonesia gave a preliminary all-clear Saturday after radiation-screening passengers arriving at Jakarta airport from Japan, which is battling to prevent leaks at a stricken nuclear power plant.

"The nuclear energy regulatory agency, with the airport's management, started to carry out screenings on Tuesday," Soekarno Hatta international airport official Frans Yoseph told AFP.

"Up until now we have not detected any sign of radiation," Yoseph said adding that they will continue to conduct checks until the Japan's nuclear crisis ends.

The team conducted screenings for passengers, crew members and luggage coming off direct flights from Japan, he said, adding that there were six flights to and from Tokyo and Narita every day.

A 9.0-magnitude earthquake on March 11 triggered a giant tsunami that flattened Japan's northeast coast and killed 7,197, according to the latest police death toll, with almost 11,000 officially listed as missing.

Four of the six reactors at Fukushima No. 1 plant have been in danger of leaking dangerous amounts of radioactivity after an earthquake and tsunami led to a series of hydrogen explosions and fires at buildings housing the units.