There was a need to educate citizens to "change their mindset (and understand) that albinos do not have any magical powers", Isaac Katopola, deputy secretary in the social welfare ministry, told AFP.
Albinos, who are very pale due to a hereditary genetic condition that causes an absence of pigmentation in the skin, hair and eyes, are sometimes killed for their body parts for use in witchcraft.
Katopola said "officially six albinos have been killed" since a surge in attacks began in December, while UN agencies in Malawi put the figure at nine.
The two-month probe, which is being supported by the United Nations Children's Fund and UN Women, will also establish "where the market for body parts is among Malawi, Mozambique and Tanzania".
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"There is something going on and this will help us to undertake appropriate interventions," Katopola said on the sidelines of a colourful celebration of albinism.
Suspects arrested in killings, abductions and those in possession of albino bones have said they sell body parts of albinos in Mozambique and Tanzania.
The awareness day was attended by scores of young and adult albinos who braved a scorching sun -- which can damage their pale skin -- at a football ground located at the foot of Mulanje Mountain in the south of the country.