A Nigerian man shouted angrily and fought against police officers after an appeal hearing of his fraud conviction in Da Nang was suspended on Friday, due to the absence of his interpreter.
Nnadikwe Christian Sunday stood trial again with his accomplices, Nigerian Deke Collins and Vietnamese Le Thi Kim Quyen.
The interpreter for the two Nigerians was absent due to health reasons.
The judge panel decided to adjourn the court. Sunday, then handcuffed, stood up and shouted at the panel in English.
Police asked him to sit down but he fought back, and they had to bring him out of the courtroom.
The three filed an appeal after a court in August sentenced Quyen to 15 years in jail and the Nigerians 12 years each for two cyber fraud cases that earned them more than VND3.3 billion (US$150,000) between April and August 2013.
Most of the money came from the scheme in which they hacked into the emails of local companies to swindle money from their foreign partners.
In the other scheme, they pretended to be a British friend of two Vietnamese women on Facebook and asked them to send money as shipping fees to receive gifts.
Another accomplice, Mamado Abdallar Mark, is still at large.