Vietnamese prosecutors on Tuesday summoned the wife of a man who was found dead in police custody in April to investigate her claim that a police officer had solicited sex from her during her husband's detention.
Nguyen Cong Nhut, a former employee at the Kumho Tire Factory in Binh Duong Province, was found dead on April 25 at the Ben Cat District police station.
He had been kept there for several days during a police investigation into accusations that Nhut stole a large number of tires from his employer.
Prosecutors of the Supreme People's Procuracy (SPP), Vietnam's highest prosecutorial body, also said they would verify the authenticity of Nhut's alleged suicide note.
Police claim that Nhut had volunteered to stay in custody and later committed suicide by hanging himself from a cell phone charger.
Tuyen, 30, has claimed that police major Nguyen Thanh Phu of Ben Cat District, who was part of a team investigating the theft of between 6,000 and 7,000 tires at Kumho Tire Factory, had asked her to go to a hotel with him, and also advised her to sell her land if she wanted to save Nhut.
Phu was demoted from major to captain on May 19. He admitted to having called Tuyen but claimed in his explanation to the provincial police authorities that he was just "joking" with the arrestee's wife.
Nhut's family has refused to accept the police account of his suicide and have called for an independent investigation into his death.