[2] He hailed from Wambangan village, Boana District, in the Morobe Province and joined the Ombudsman Commission on 3 July 2008.
In 2001, he was appointed Public Prosecutor of Papua New Guinea[3] and also served as co-Chairman of the International Association of Prosecutors World Conference in Copenhagen, Denmark; Director of Asia Crime Prevention and Foundation; Director on the International Ombudsman Institute; Vice-Chairman of the Pacific Ombudsman Alliance and he was elected as an Executive Committee Member of the International Association of Anti-Corruption Authorities (IAACA).
[3] Manek investigated charges of corruption by public figures, including former Prime Minister Sir Michael Somare,[2] and as such, was the target of attacks against him.
In December 2009, he was met with gun fire from attackers when returning home, and narrowly escaped death after being shot.
[2][6] Politicians, including the coalition government led by Prime Minister Sir Michael Somare, had tried to rein in the powers of Manek’s state corruption watchdog, by introducing legal amendments in a bill named the Maladina Bill, designed to undermine the Ombudsman Commission.