Panaji, Nov 18 (IANS): Goa-based mining baroness and Swiss Bank account holder Radha Timblo was Tuesday grilled by Enforcement Directorate officials for several hours.

Timblo was in the news a few weeks back, after her name was revealed by the central government to the Supreme Court, along with the names of two other Indians, for having a Swiss bank account.

Timblo Tuesday did not talk to the media waiting outside the Enforcement Directorate office in Panaji, and only responded with a "no comment" to media queries directed at her.

Enforcement Directorate sources, however, said she was grilled on the issue of under-invoicing of bills for iron ore exported by her company to China.

"We have summoned her again to appear with more documents in a week," an Enforcement Directorate official said.

The under-invoicing by Timblo Pvt. Ltd also found mention in the Justice M.B. Shah Commission report, which exposed a Rs.35,000 crore illegal mining scam a few years back.