1.   The prisoners overpowered their guards and locked them in a cell.

2.   The gunfire erupted after the prisoners overpowered the troops who were guarding them.

3.   Within minutes prisoners had overpowered and killed half a dozen guards, and a heavy gun battle spread across the compound.

4.   Within minutes prisoners had overpowered and killed half a dozen guards, and a heavy gunbattle spread across the compound.

5.   Within minutes prisoners had overpowered and killed a half-dozen guards, and a heavy gunbattle spread across the compound.

6.   The hostage crisis in Valledupar began Thursday when prisoners overpowered guards and seized weapons.

7.   The takeover began Thursday when prisoners overpowered guards and seized weapons.

8.   According to the reports, the prisoners overpowered the policemen in nearby Rawalpindi, unlocked their handcuffs and seized two vehicles to flee from the scene.

9.   The prisoners overpowered the few officials who tried to prevent the escape as others sought to contain the fire.