According to the source of Famalicão Volunteer Firefighters, one of the agents suffered injuries considered serious.
The six agents were transported to Braga Hospital.
The accident resulted in another minor injury, which was taken to the Hospital de Famalicão.
The accident resulted in a collision between the PSP bus and a car.
The alert was given by 9.23am. Initially, Braga District Relief Operations Command had announced five wounded.