JOHANNESBURG — Three men accused of murdering the South African reggae star Lucky Dube were found guilty here on Tuesday, just hours after two of them tried to bolt from custody on the way back to their trial.

Mr. Dube (pronounced doo-bay) was an internationally famous musician, and his murder during a botched carjacking in October 2007 once again brought the appalling rate of violent crime in South Africa to the world’s attention.