of which 10...

In fact, it was reported on Friday that the police have arrested 29 women of various nationalities, aged between 20 and 47, in an operation targeting pivoted KTVs, of which 10 of them will be deported as their short-term visit passes and work passes were cancelled.

Is "of which 10 of them will be deportef" correct? Can it be "of whom 10 will be deported"?

Thanks!