The resignation letter was submitted by Ralte, who holds the portfolios of labour, employment and industrial training, to Chief Minister Lal Thanhawla on Wednesday last, said Lalram Thanga, Principal Secretary to the Chief Minister.
Ralte was embroiled in a controversy over sending 32 Mizo students to a fake institution - Nalanda Institute of Advanced Studies (NIAS) - in Kolkata to study Bachelor of Hotel Management.
In his resignation letter, he alleged the opposition parties to be the reason behind his resignation and that they were also trying to involve the chief minister in the controversy.
The state government has so far suspended two officials in this regard.
Lal Thanhawla has already accepted the resignation of Sangkunga, chairman of the MYC (Mizoram Youth Commission) in this connection.
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