A New York white supremacist was convicted by a federal jury on Friday of plotting to use a remote-controlled radiation device he called "Hiroshima on a light switch" to harm Muslims and U.S. President Barack Obama.

After less than three hours of deliberation in the U.S. District Court in Albany, the jury unanimously found Glendon Scott Crawford guilty of all three charges against him.

Crawford, 51, wearing a gray suit and eyeglasses, showed no emotion as Judge Gary Sharpe read the verdict.