"CPI-M State Secretary Kodiyeri Balakrishan's allegation is baseless and made with a view to create a smoke screen in ahead of June 27 assembly by-poll in Aruvikara," Home Minister Ramesh Chennithala told reporters here.
The government had not interfered in any manner in the investigation of the case, he said.
Vigilance was carrying out an "impartial" probe and its director, after completing procedures, would file report in the court soon, he added.
He also alleged that Chief Minister Oommen Chandy was not allowing 'free functioning' of the Home department.
VACB had registered an FIR against Mani based on the charges of Kerala Bar Hotel Owners Association Working President Biju Ramesh that Mani had accepted bribe for decisions in favour of bar owners.