A Vietnamese woman and her two daughters in Kanagawa Prefecture are on the verge of being deported because her visa expired in January and the immigration office is withholding an extension.

The immigration office alleges that the passport held by Nguyen Thi Thu Cuc, 39, a resident of the city of Ayase, contains false information in violation of the Immigration Control Law, a support group for the family said Thursday.

The group said that Nguyen applied for an extension to her visa in January at the Yokohama branch of the Tokyo Immigration Bureau, but the bureau refused to comply after noticing that the birth date in her passport differed from that in her old passport.