Gangsters crashed their car into police vehicles in Ho Chi Minh City's District 3 on Friday, firing upon the police with guns and petrol bombs, but no casualties were reported.
Police from District 3 said that when they attempted to intervene in a battle between two rival gangs, some members of the Nam Dinh gang attacked them with scimitars and petrol bombs, while others fled by car.
Three gang members were arrested soon later when they were found hiding in the houses of local residents.
However, other members of Nam Dinh who had initially fled the scene then returned to rescue the arrestees.
They crashed their car into the officers' car and damaging it along with seven police motorcycles, according to police.
Police then fired warning shots into the air, but the gang continued to resist, brandishing guns of their own and firing at the officers. However, none of the officers was hit.
After failing to rescue their associates, the gang fled, firing shots at the officers who chased after them.
Police said they lost pursuit of the gang when they reached Binh Tan District.
Initial findings were that Nam Dinh gang members were chasing after members of the Binh Dinh gang when the police stepped in.
The Binh Dinh gang arrived at Nam Dinh's headquarters, an apartment building in Ward 3, around 1:30 a.m., to confront the gang over conflicts concerning protection rackets and gambling rings.
According to police, they have identified four members of the Nam Dinh gang, including the three arrestees.
Police are investigating the case further.
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