It said it was working closely with Malaysian authorities and was awaiting the results of the autopsy report.
"The High Commission has equally taken note of the concerns of Nigerians in Malaysia. The High Commission assures that necessary steps are being taken towards addressing this unfortunate incidence with a view for a redress and to prevent such occurrence in the future," it said in a statement on Saturday (July 13).
It urged Nigerians in Malaysia to continue to be law-abiding and to cooperate with the authorities and the High Commission while investigations were on-going.
The High Commission said at the time of the arrest of Thomas Orhions Ewansiha, he was in possession of a student pass that was valid until Sept 23.
It also confirmed that Ewansiha was a doctoral student of Management at Limkokwing University of Creative Technology.
Ewansiha died on July 9 while in detention following a raid by the Immigration Department in Desa Aman Puri in Kuala Lumpur.
Only July 11, a group of Nigerians took to protesting his death outside the Nigerian High Commission in Kuala Lumpur.
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