「疑似家族」という言葉がワイドショーなどで取り上げられるようになって、ああだこうだと訳を考えていましたが、Japan Todayはextended familyとしていました。このあたりなのでしょうかね。（GP）
Woman, 7 members of extended family arrested in multiple murder case
CRIME NOV. 08, 2012 - 06:58AM JST ( 13 )
Hyogo prefectural police on Wednesday released this photo of murder suspect Miyoko Sumida.
Police arrested seven members of the same extended family Wednesday in a multiple murder investigation that has transfixed Japan, an official said.
Newspapers and television news programs have offered extensive daily coverage since three decaying corpses were found in an empty house in Amagasaki, Hyogo Prefecture several weeks ago.
A fourth body encased in a concrete-filled drum was pulled out of the sea in Okayama Prefecture earlier this week as police said more people were missing, presumed dead.
The main suspect in the case—a 64-year-old woman named Miyoko Sumida who used to live in the abandoned house—has been in custody since early in the probe, which began last year.
Officers on Wednesday re-arrested Sumida and arrested her 62-year-old common-law husband and her two sons, aged 30 and 25.
They also arrested a 42-year-old man married to one of the women whose body was found in her house, and three others, a police spokesman said, taking the total number of arrests to seven.
All four dead were related to, or acquainted with, the chief suspect, reports have said.
News coverage of the case has featured tangled family trees and speculation over the reasons behind the multiple deaths, which has centered on claims the family has large debts and hinted at the involvement of organized crime.