BENGALURU, Sept 9 (Reuters) - India's markets regulator

on Tuesday said the investigation and final order on Jane Street

could be much wider, adding that it will not release any

documents that were not relied upon for passing the order in the

case.

Last week, Jane Street filed an appeal against the

Securities and Exchange Board of India (SEBI), seeking to compel

it to release documents the U.S. high-frequency trading firm

said were pertinent to rebut allegations of market manipulation.

Hearing for the case kicked off on Tuesday, with SEBI saying

the investigation against Jane street is at a critical juncture

and is on going.

(Reporting by Nishit Navin; Editing by Janane Venkatraman

)