Controversial business tycoon Low Taek Jho or Jho Low should return to Malaysia and testify before the Public Accounts Committee (PAC) over his dealings with 1MDB.

In a coffeeshop full of supporters, DAP senior leader Lim Kit Siang said Jho Low should face PAC because he has the most knowledge of the dealings in 1MDB, the embattled state sovereign fund set up by Prime Minister Najib Abdul Razak.

"But Najib just signed the papers; Jho Low is the only person who knows how it all began, and he knows more than Najib," Lim said at the event to show support over his ban from Parliament for asking questions on 1MDB.

"He (Jho Low) is the alpha and omega of 1MDB."

Lim said this when referring to newspaper cuttings of Low's presence in Penang during the 2013 general election.

During the polls, the 1Malaysia Penang Welfare Club - an organisation run by a friend of Jho Low - handed over donations to various NGOs including two newspaper associations.

In its response in Parliament in December 2015, the Finance Ministry admitted Low had attended a 1MDB board of directors meeting on behalf of the Saudi royal family but did not participate in discussions.

Lim said Low ( photo ) was in Penang during the period when BN organised many "free dinners and gave out lots of cash" to try and topple Chief Minister Lim Guan Eng.

It was previously reported by The Wall Street Journal - which exposed the financial discrepencies in 1MDB and the RM2.6 billion donation in Najib's personal bank accounts - that Low has allegedly acted as a senior strategist for the BN.

Lim said the country never faced a "global corruption" scandal as it did now during Najib's tenure since 2009.

"We have twin scandals - 1MDB and the RM2.6 billion donations - which is one big scandal.

"Malaysians have to pay for this scandal but why should we be made responsible for it?" asked the Gelang Patah MP.

Accompanying Lim at the event at Pasar Chowrasta were his son Guan Eng, Parti Amanah Negara president Mohamad Sabu, DAP assemblypersons Teh Lai Heng (Komtar) and Wong Hon Wai (Air Itam).