'Yokota and his wife Sakie, along with seven other families of Japanese citizens abducted by North Korean agents, formed a group in March 1997.'

In this sentence, when you say ' families (of Japanese citizens) abducted by North Korean agents', doesn't that mean these families were abducted? I thought it should be 'families whose child or sibling were abducted' because the ones who were taken away are not these people who formed a group but their children or siblings.

Or is it possible to say 'This family was abducted' when you want to say 'a member of this family was taken away'?