Finance Minister Lim Guan Eng should leave exposing the previous administration's corruption and wrongdoings to other ministers or agencies, PKR de facto leader Anwar Ibrahim said.

Speaking in an interview with Astro Awani, Anwar said Lim should instead concentrate on assuring investors to invest in the country.

"I met with and told Lim Guan Eng that the position of the finance minister should be more sensitive.

"Every statement (by the finance minister) will reflect directly on investors," Anwar said during the recording of the 'Al' interview programme on the news channel, which is set to be broadcast at 8.15pm on Thursday.

Read more: Guan Eng: I told Anwar exposés were done on Dr M's instruction

Anwar was responding on the Moody's Investors Service's study that showed that the power transition process in the country was causing uncertainties in policymaking.

This, in turn, could worryingly cause a negative rating on the national economy, and spook investors.

"However, in the current scenario, ministers also have the responsibility to expose deals (by the previous government) and unravel lies.

"He (Lim) can task one or two other ministers, as well as the MACC to explain about all the exposes.

"This would enable Lim to focus on pacifying investors and increasing their confidence on the country's economy," Anwar said.