Family memeber scrutiny while scrutiny of individ income tax

Hi,

My query is as under:

Assume If Mr A files Income tax returns and get Income Tax Notice for Scrutiny of his returns.

Then will/can the assessing officer also check/Scrutinize returs of Mr A's Family Members who stay with Mr A in same house.

(Please Assume that there as no Interconnected Financial transactions in Books or Bank, between Mr A and his family Members.)

Please reply.