Thomas said that he had written to Chief Minister Pinarayi Vijayan in this regard.
"I have got some indications, from some reliable sources, that the accused had gone abroad using fake passport and he had indulged in human trafficking during the period," he told reporters here.
The MLA said he did not have any other details or evidence in this regard. But, police could probe the matter, he said.
The actress, who starred in Tamil and Telugu films besides Malayalam, was allegedly abducted and molested inside her car by a group of men on the night of February 17 near Kochi.
Six persons, including prime accused 'Pulsar' Suni and his five accomplices, had been arrested in connection with the incident that created an uproar.