MIRI: A 55-year-old Vietnamese fisherman, who was among 28 foreigners arrested for illegal fishing off Miri, died Tuesday during the detention.
On Monday, the Malaysian Maritime Enforcement Agency (MMEA) seized two fishing boats for fishing illegally in local waters.
Tran Van Phuong was said to have fallen seriously ill while he was detained on the boat.
Miri MMEA commander Hambali Yaakub confirmed that Tran died after he was rushed ashore and sent to the Miri Hospital.
He said another crewmember, Danh Nghia, 24, who suffered leg injuries believed to be due to a sting, was also sent to the hospital.
Sarawak CID chief Senior Asst Comm Datuk Dev Kumar confirmed that the MMEA informed the police about Tran's death.
He said police have started a probe and were waiting for a post-mortem report on the cause of death.