Olympus Corp. will hold a briefing at a Tokyo hotel Thursday about its first-half earnings report that will be attended by President Shuichi Takayama, the company said.

The camera and medical equipment maker, whose third-party investigation panel last week released a report on its coverup of past investment losses, is expected to submit its quarterly report, including information about earnings, to the Financial Services Agency by Wednesday.

By law, the quarterly report must be submitted by this date for the company to remain listed on the Tokyo Stock Exchange.

Olympus was initially scheduled to announce its April-September earnings for fiscal 2011 on Nov. 8, but postponed it amid the unfolding scandal.

Meanwhile, members of an outside panel set up by Ernst & Young ShinNihon LLC, Olympus' most recent external auditor, held its first meeting Monday to study whether the auditor followed proper procedures.

The move comes as Olympus' third-party panel said in its report last week that the company's two auditing firms — KPMG AZSA LLC and Ernst & Young ShinNihon — had problems with the precision machinery maker's accounting, including work AZSA handed over to Ernst & Young ShinNihon in 2009.

The outside panel plans to submit an interim report to Olympus by the end of this year and compile a final report by the end of February, lawyer Nobuo Gohara, a member of the panel, told a news conference in Tokyo.

Ernst & Young ShinNihon said it set up the outside panel in light of the "importance" of the situation, although its internal probe concluded there were no accounting procedure problems.