A Vietnamese woman accused of killing the North Korean leader’s brother pleaded guilty to a lesser charge of "causing hurt by a dangerous weapon".
Doan Thi Huong, who is the only suspect in custody for the killing, has been handed a prison term of three years and four months in a Malaysian court on Monday.
Her lawyer said she could be freed by May.
The surprise reduction in charges came after authorities rejected a request for her murder charge, which carried a mandatory death penalty, to be dropped entirely.
Earlier, the attorney-general withdrew the charge against Indonesian co-defendant Siti.
Kim Jong-Nam was assassinated at Kuala Lumpur Airport in 2017 in broad daylight, with the toxic nerve agent VX.