A refugee from Kenya killed one former co-worker, wounded three others and then killed himself Tuesday in a workplace shooting that authorities are still trying to unravel in Virginia, police said.

Getachew Fekede, 53, had entered the U.S. through a refugee immigration program and worked for the railcar manufacturer FreightCar America before being fired in March when he stopped showing up for work, Roanoke Police Chief Tim Jones told reporters.

A neighbor told the Associated Press that Fekede quit his job over being harassed by a co-worker. Clarence Jones said Fedeke would send money to his mother back in Kenya and had grown concerned about his finances.

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