North Police spokesman Richard Kalaya said the three suspects, who chopped off the woman's toes, were identified as Fumu Nyirenda, 42, Eliah Mwandira, 22 and native doctor Kaphaso Nyirenda, 34.
Kalaya said they also recovered one of the toes which is under analysis and preservation at Mzimba district hospital.
The incident happened on Saturday evening and Government said it was disturbed that the attack targeted an old person, a woman, and a person with albinism as she was lighting fire in her kitchen for her daughter to prepare a meal upon return from a nearby market.
Mark Botomani, Minister of Information, Civic Education and Communications Technology, said in a statement elsewhere in the region, violence against people with albinism has been linked to elections.
“Although there has been no study in Malawi, Government is compelled to conclude that the attack in Mzimba could be part of calculated violence as we may be going towards fresh presidential election ordered by the Constitutional Court on 3rd February, 2020,” said Botomani.
Albinos, who are very pale due to a hereditary genetic condition that causes an absence of pigmentation in the skin, hair and eyes, are facing attacks and killings due to superstitious beliefs, promises of prosperity and negative mystification of albinism.
There have been at least 25 killings of people with albinism since 2014, a spree that has spread terror through the 134,000-strong albino community.
The High Court of Malawi last year convicted and sentenced three -two men and a woman--to death for conniving and gruesomely killing a person with albinism in Mchinji in 2015.