Mattel has not stepped up checks on the nearly 3,000 companies that license its brands to put on products other than toys, Mr. Walter said.
He said, however, that the commission had stepped up checks of market movements in the turmoil after the March 11 disaster, including any indications of market manipulation or insider trading.
After some recent bad press, the central government has promised to step up checks of the decontamination work.
Over that time, 14 countries have committed to removing nuclear materials from their territory altogether, and many others have pledged to step up security and tackle nuclear smuggling, by stepping up checks at ports, for example.
In a statement posted on its Web site, China's General Administration of Quality Supervision, Inspection and Quarantine said it would temporarily restrict dairy products, fruits and fish, among other items, from the five prefectures, while stepping up checks on foods from across Japan.
Hangzhou officials are reportedly stepping up checks at poultry farms and are attempting to halt "the flying of domestic pigeons".
Croatia's Interior Minister, Ranko Ostojic, warned that the country would close its border with Serbia if the influx continued, while Slovenia stepped up border checks to prevent refugees using it as passage between Croatia and Austria.
On Thursday officials maintained that the risk of exposure for passengers who may have shared an aircraft with the Dallas nurse is low, but stepped up their checks and monitoring procedures.
Several states, including France, Belgium and Sweden, have also stepped up security checks on asylum seekers since it emerged that some of the attackers who carried out the suicide bombings and shootings in Paris last November may have entered Europe as part of last summer's refugee influx through Greece.
Authorities stepped up security checks at some major city intersections and in tourist areas.
TV footage showed armed guards outside the base, which is located 30 miles from the border with Pakistan, and police stepped up vehicle checks in the area.
