(Updates figures, adds ministry account) CAIRO, April 27 (Reuters) - Three prison inmates died and 18 were injured in a fire in an Egyptian prison on Friday, security sources said. An Interior Ministry spokesman said an electrical short in a ceiling fan sparked a fire in the sleeping quarters shortly after dawn in Wadi el Natrun prison, northwest of Cairo. The spokesman gave no details on the number of injured prisoners, being treated at the prison's hospital wing. Security sources put the number of injured at between 18 and 20.
