The government said Monday it will slap new unilateral sanctions on North Korea in response to its rocket launch Sunday, amid rising calls from the families of abductees for tougher diplomacy.

Aside from coordinating closely with the international community to hammer out strong U.N. Security Council sanctions against the North, Japan is looking at its own punitive measures, Foreign Minister Fu-mio Ki-shi-da told the Lower House Budget Committee, without elaborating.

In a related announcement, the Diet is set to adopt a resolution condemning North Korea during a plenary session Tuesday, Sa-da-ka-zu Ta-ni-ga-ki, secretary-general of the ruling Liberal Democratic Party, told reporters in the evening.