Prime Minister Anwar Ibrahim today said that politicians from the government bloc were also being investigated by the authorities, adding however that details of these probes were uncertain.
Speaking in the Dewan Rakyat today, he said whether or not charges would be brought would depend on the Attorney-General's Chambers, with no government intervention.
"I don't know the specifics, but I am told that there are investigations against the opposition as well as the government bloc," he said during Minister's Question Time.
"I don't know the positions involved and so on, because I only asked the authorities and they confirmed that there are investigations ongoing."
Anwar was responding to an additional question from Rantau Panjang MP Siti Zailah Mohd Yusoff, who asked if any MPs from the government bloc were under investigation.
She also asked about funds received by parties to prevent disputes about selective prosecution.
Anwar said the existing laws allowed donations from any individual or body to political parties.
However, he said this would become a problem if the donation was found to have elements of bribery.
"If there are issues of bribery in PKR, that can be raised as well. I have no problem with that," he said.
"The only question is, we have to understand the law. There is nothing unlawful about anyone donating to political parties."