He was arrested on July 4, during an operation at apartments in Desa Aman Puri in Kuala Lumpur, which led to the arrest of 20 foreigners.
The raids were following complaints from residents against African nationals who were suspected of not having valid documents, use of drugs, prostitution and public intoxication in the area, the department said.
Ewansiha had cause doubt on the authenticity of his documents, and he was then detained for 14 days for further investigations. Checks were conducted on Ewansiha and treatment was administrated for an old injury on his thigh. He did not specify any pre-existing medical illnesses, according to Immigration.
The officers on duty were told by the other detainees that Ewansiha had had a seizure in his sleep.
“An ambulance from HUKM (Universiti Kebangsaan Hospital) as well as an assistant medical officer arrived at 12.30am and they had attempted to help the subject.
“However, he was then pronounced dead,” Khairul Dzaimee said, adding that a police report was made on the matter.
Ewansiha’s death led to a protest outside the Nigerian high commission on Thursday (July 11).