An opposition lawmaker was gunned down by a police officer Thursday in the second fatal shooting of an opposition legislator this week amid ethnic fighting sparked by Kenya's disputed presidential election, officials said. Henry Kosgie, an official of the opposition Orange Democratic Movement, said at a news conference that witnesses had reported seeing David Too shot by a police officer at a roadblock as he was traveling from Nairobi to the western city of Eldoret by car. An Associated Press reporter saw Too's body at a hospital in Eldoret, where Deputy Police Chief Gabriel Kuya said the police officer had shot Too in a dispute over the officer's girlfriend. But Too's Orange Democratic Movement party charged it was an assassination. "This is part of an evil scheme" to rob the party of its majority in parliament, party secretary-general Anyang Nyongo said. Opposition lawmaker Mugabe Were was fatally shot as he drove to his house in suburban Nairobi Tuesday. The ODM accuses President Mwai Kibaki of stealing the presidential vote. Angry residents of Eldoret marched on the police station as word of Too's death spread. They fled when paramilitary officers fired into the air.