She then shot and killed six employees of the plant with a pistol before taking her own life.
It followed a day of violence during which protesters set fire to a bank, killing three employees.
He shot four people, splashed the liquid over clothing and set fire to the store, killing seven employees and himself.
A runaway reaction ruptured a tank and the resulting explosion killed two employees.
She said a friend had told her who killed the two owners and five employees of the restaurant after it closed on Jan. 8, 1993.
In 1910, three union members confessed to setting a bomb at the paper's downtown Los Angeles headquarters that killed 21 employees.
The gunmen then entered a nearby sauna complex and killed seven female employees.
They killed three employees and wounded another during the winter of 1862-63.
The site was bombed on 7 July 1944, killing 37 employees.
A gunman said to have been angered by his mother's death stormed into a hospital today and opened fire, killing three employees, the police said.