Najadi was the first Persian merchant banker to link the Middle East countries to the economies of Malaysia, and other ASEAN member countries since 1974. AIAK Group, in 1975, founded the Arab Malaysian Banking Group (AMBG), now a $16 billion banking group in Asia, with an initial paid in capital of $2 million only. AMBG soon became one of the largest banks in Malaysia, now renamed as AMBANK.
Najadi was appointed from 1978 to 1985 by the Governor of the Central Bank of Malaysia as non-executive independent director of the Malaysian Industrial Development Finance Berhad, an industrial and merchant bank in Malaysia.
Diversification of activities
Najadi acquired in 1968 from UBS Group, Supramar AG, a hydrofoil specialist based in Lucerne, Switzerland. He expanded its operations world wide and established over 200 hydrofoil lines.
Najadi was the Chairman of Free2move Asia, a joint venture firm with Free2move AB, of Sweden, in the field of RFID and sensor networks. The company was fully acquired by Free2move Holdings AB, Sweden, in August 2010 upon which Najadi resigned.
On 29 July 2013, banker Hussain Ahmad Najadi was shot dead while his Malaysian Chinese companion Chong Mei Kuen, 49, sustained serious injuries when they were shot from close range at a parking lot, after leaving the Guan Yin Temple in Lorong Ceylon—a Chinese temple. A gunman who crept from behind, fired randomly at Hussain Ahmad, 75, and his 49-year-old wife at close range, killing the renowned banker on the spot near a car park.
Najadi sustained two shots in the chest while his wife was hit in the left hand and right leg in the 2 p.m. incident. Initial police investigations revealed that the gunman was among three people who waited outside the temple for Hussain Ahmad, who was in a private discussion with a colleague involving a share transaction. The gunman, who wore sports attire, dark glasses and a cap, was believed to have escaped in a taxi together with his accomplices.
Motive behind the killing is still unknown which until this moment police have made arrests. The Police has made a major breakthrough reported by NST on 7 August 2013, arresting Monday 5 August 2013 a 42-year-old man and two women in separate locations in the city to assist in investigations. "The male suspect surrendered himself at the Kuala Lumpur police contingent headquarters, the Police is quoted stating: "He is believed to have been at the crime scene with the taxi driver and the shooter." On 16 August 2013, the Taxi driver Chew Siang Chee, arrested by the Malaysian Police for allegedly transporting the assassin who killed banker Ahmad Hussain Najadi, claimed trial to the possession of a firearm and ammunition at the Sessions Court. Chee was one of three suspects detained in the police pursuit of the hitman initially identified as “Sei Ngan Chai” but who has since been named as 44-year-old Kong Swee Kwan.
His son, Pascal Najadi, a Swiss citizen, helped out of Moscow co-ordinating with the Malaysian Police to track down the killer. "My father died for reporting corruption within Malaysia. Here (Moscow)I feel protected and safe. I can only return to Malaysia once we know who and why." Pascal said.  The 46-year-old banker added: "The world stands still when such horror terrorises you."
His security advisers told him not to return until the killer is behind bars. Pascal was unable to be at his fathers burial due to security risks. It has been put on YouTube, where Heidi Najadi, the Swiss mother and first wife is standing collected and with bravery by the grave at the burial. A humble yet elegant tribute page for his father has been installed on his family firm's website www.aiakswiss.com by Pascal Najadi, now the CEO and Chairman of the firm that founded Malaysia's 5th largest bank, AmBank, back in the early 1970s'. "When reality conquers illusion you know it is time to wake up, no matter what." Pascal said.
On 23 September 2013, the Malaysian Police were able to capture the killer  who was subsequently convicted for murder a year later. In November 2015 the Malaysian police announced that they were no longer looking for suspects in the killing and had closed the case.
- Whelan, edited by John (1983). Bahrain. London: Middle East Economic Digest. pp. 120–121. ISBN 0-9505211-7-5. Retrieved 9 February 2011.
- "Crime in Malaysia: Drive-by shooting", The Economist
- Ramli, Fahirul N. (29 July 2013). "Arab-Malaysian Bank's first MD shot dead, wife injured". New Straits Times. Retrieved 29 July 2013.
- "Cops get break in former banker's murder case", New Straits Times
- Maria Begum (6 August 2013). "Was Najadi's son right? 3 arrested for murder of bank founder but killer STILL AT LARGE". Malaysia Chronicle. Retrieved 6 August 2013.
- http://www.themalaysianinsider.com/malaysia/article/2-years-on-son-of-murdered-banker-still-seeking-justice Retrieved 6 November 2016
- http://www.themalaymailonline.com/malaysia/article/police-says-ambank-founders-murder-probe-completed-case-closed Retrieved 6 November 2016
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