The searches are understood to be taking place at the Delhi and Mumbai offices of the NGO, they said.
Officials did not give any details of locations where searches are going on.
Anand Grover, husband of former Additional Solicitor General Indira Jaising was booked by the agency for alleged Foreign Contribution (Regulation) Act violations in receiving foreign aid.
When contacted, Grover asked not to be disturbed as he was in the “midst” of it (searches).
Lawyers Collective had denied all charges levelled by the CBI.