Official results are yet to be announced following Sierra Leone’s general election on Saturday, but President Julius Maada Bio and his main rival Samura Kamara are both claiming victory.
It has been a tense campaign marred by violence.
Mr Kamara says live ammunition was fired into his party’s headquarters as he held a news conference on Sunday.
A woman there was reportedly wounded and there are fears for her life.
Saturday’s vote saw a high turnout, with voters telling the BBC the process was smooth despite ballots opening hours late in many areas.
There had been concern about potential clashes in the run-up to the vote.
On Wednesday, Mr Kamara’s All People’s Congress (APC) alleged that one of its supporters was shot dead by police, which the police have denied.
Supporters of both main parties have been accused of attacking opponents.
Accusations of election irregularities were also being thrown on Saturday, after Mr Kamara alleged ballot stuffing and voter suppression in some parts of the country.
However, the electoral body had insisted, in a press conference earlier this week, that they had mechanisms in place to ensure a fair vote. Local media reports that arrests were made.
The election is taking place against the background of a troubled economy, the rising cost of living, and concerns about national unity.