Zimbabwe’s ruling party and the main opposition group on Thursday both declared that they won the presidential election ahead of the imminent announcement of the result, reflecting a bitter rivalry that was exacerbated by deadly violence in the capital.

The death toll rose to six killed when police and army fired live rounds to disperse a protest Wednesday by opposition supporters in Harare, police announced. In addition 14 were injured and 18 people were arrested at offices of the main Opposition party, said police.

The Zimbabwe Electoral Commission said it will start announcing results of the presidential election at 10 p.m. (20:00GMT) Thursday, though by law it has five days from the vote on Monday to deliver the final tally and it has sometimes given conflicting statements about when it is releasing information. International election observers urged the commission to reveal the presidential results as soon as possible, saying delays will increase speculation about vote-rigging.

Meanwhile, a spokesman said the main opposition candidate, Nelson Chamisa, was being investigated by police for allegedly inciting violence.

Chamisa, opposition politician Tendai Biti and several others are suspected of the crimes of “possession of dangerous weapons” and “public violence,” according to a copy of a search warrant, which was seen by The Associated Press. The warrant authorizes police to search for and confiscate any evidence as part of their investigation.

The authenticity of the warrant was confirmed by Kumbirai Mafunda, a spokesman for Zimbabwe Lawyers for Human Rights.

President Emmerson Mnangagwa and the ruling ZANU-PF party have accused the opposition of inciting the deadly violence.

After violence, Zimbabwe awaits release of Prez vote