Kenya ? A policeman shot and killed an opposition lawmaker Thursday in what authorities say was a crime of passion over a woman. But machete-wielding protesters convinced it was an assassination clashed with police, leaving at least three dead.

The fighting interrupted talks aimed at calming a nation gripped by violence since a disputed election a month ago.

At least one person died and 21 people were injured after the lawmaker’s death.

Police said David Too was shot by a police officer who discovered the lawmaker was having an affair with his girlfriend. The woman – whom Too family members deny was linked to the politician – was shot in the same attack also died, a hospital official said.

Too was the second anti-government legislator killed in a week; opposition politicians said both were victims of assassination plots. A Too family spokesman accused the police of a cover-up, saying the lawmaker was not involved with the woman and had feared for his safety.