The man, Neelash Ramachandran Jagtap, alias Sachin, told security guards at the cricketer's house he was from Mumbai police and wanted to question the parents of Sreesanth.
However he told the parents from near the gate he was from BCCI and close to Union minister Sharad Pawar and could help their son. Suspecting his motives, they asked him to wait outside.
Police rushed to the cricketer's residence yesterday and arrested Jagtap, following a complaint from the parents and registered a case against him on the charge of impersonation.
They said the Hindi-speaking man, who arrived here from Mumbai two days ago, had a Mumbai-Kanyakumari rail ticket with him.