Meng, the first Chinese to have been elected to the position, was the former Vice Minister of China's public security.
He has also held positions like country Coast Guard's Director and Deputy Head of State Oceanic Administration.
He was elected to the position during Interpol's 85th Members' meeting in Indonesia.
Interpol is yet to comment on his disappearance.
Human Rights bodies had concerns over Meng's appointment
When Meng was elected the Interpol chief, Human Rights bodies thought Beijing would use this position to go after dissidents abroad.
Upon taking office, Meng had spoken about working together with all the members to build a stronger platform for global police cooperation.
He had also called for better coordination among regional and global forces to build a safer world.
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Interpol is second largest International organization after UN
Founded in 1914, Interpol has 190 members and is headquartered in France. It is the second largest organization after the United Nations. Upon Meng's elevation, a Chinese spokesperson said the country valued the role of Interpol and is willing to shoulder more responsibility.