The incident happened around Walayar toll plaza around 10.50pm on Thursday.
Crime Branch superintendent of police MJ Sojan had reportedly made an obnoxious remark about the girls.
The autobiography contains serious accusations against the chief minister’s office and police.
Vigilance had raided the checkpost and seized Rs 67,000 in bribes taken by the officials.
On sensing the presence of the team, the Assistant Motor Vehicle Inspector (AMVI) ran off to the nearby forest.
The charge-sheet also remarked that it had been very painful during the investigation to note the ordeal suffered by the two minor girls.
The CBI team which probed the the case has concluded that the girls committed suicide following serial sexual abuse.
The CBI, which took up the case after a series of protests and political pressure, has upheld the findings of the Kerala police in the case.
Indications are that the team has reportedly found serious lapses by the police from the prosecution stage to the trial.
This is in the wake of the recent spurt in Covid cases in Kerala.