Former Umno leader Khairuddin Abu Hassan said he is not afraid of being arrested for lodging police reports overseas on the 1MDB scandal.

"If (Bukit Aman) wants to arrest me, it won't be a surprise.

“I am prepared for any action from their side. I don't give a damn about them," he told Malaysiakini .

The former Batu Kawan Umno deputy chief and his lawyer Matthias Chang have been barred from leaving the country, reportedly on Bukit Aman's orders.

Khairuddin has been summoned to the police headquarters on Monday for questioning regarding documents he gave to the Swiss attorney-general's office on the 1MDB scandal.

"The 1MDB scandal is an international case involving multiple countries including Switzerland.

"Meeting with the Swiss AG and giving evidence is not wrong... We have lodged multiple police reports (in Malaysia) but there has been no action," he said.

Khairuddin said he found out that he could not leave the country this morning, when he was supposed to fly to New York and London.

"The trip was for matters regarding 1MDB. I'm not going to lie. I'm not like the government," he said.

Besides Switzerland, Khairuddin has also lodged reports against 1MDB in London and Singapore.

"I just want to fight, to speak the truth, to protect the country from being destroyed and conned by one of the most corrupt prime ministers," he said.

Prime Minister Najib Abdul Razak has repeatedly denied misusing 1MDB funds for his own personal gain and vowed to solve the 1MDB imbroglio soon.

Najib and several others have claimed that there is a conspiracy to topple the prime minister and government.