HONG KONG (AP) – Investors in Lehman Brothers in Hong Kong held their second protest in a week on Sunday, accusing local banks of misleading them about investment products backed by the failed U.S. investment bank.

The demonstrators complained that banks that sold them Lehman-backed bonds didn’t properly explain the products to them.

Hong Kong’s Financial Services and the Treasury Bureau said that financial regulators would quickly investigate the allegations.

It’s not clear whether any of the Hong Kong investors have lost any money.

Lehman Brothers Holdings Inc. filed the biggest bankruptcy in U.S. history on Sept. 15.