Police utilized implement and nerve gas to keep fight coordinators from the Party for Social Renovation (PRS) inside the gathering's base camp, as a large number of marchers combined on the zone.
The restriction needs the vote delayed so as to permit an upgrade of the constituent register to confine potential voter extortion.
Demba Balde, 48, was in the PRS workplaces when "a cordon of police equipped with clubs and explosive launchers kept us from going out to join our companions in the road," the injured individual's sibling Alimo Balde told AFP.
"There were fights and Demba was captured by four cops who beat him and splashed him with (poisonous) gas. He fell, bloodied, and was attempting to relax. We attempted to bring him round however unfortunately he passed away before landing in the emergency clinic," Alimo Balde said.
An image of the man seen by AFP demonstrated him on the ground with a pool of blood around his head. A medical caretaker at the primary funeral home in Bissau said that they had gotten the body and it conveyed "indications of beating".
A few other individuals were harmed when police terminated nerve gas to scatter marchers, an AFP reporter announced.
Parliamentary races on March 10 went off calmly, however this devastated previous Portuguese state is as yet battling with the emergency released by President Jose Mario Vaz's choice in 2015 to sack his Prime Minister Domingos Simoes Pereira.
The West African state's Supreme Court said two weeks prior it had endorsed 12 contender to challenge the survey, including officeholder Vaz, who expects to stand again as an autonomous up-and-comer.
A few applicants saw the court dismiss their offer to stand, yet the universal network has expressed the constituent schedule ought to be regarded.