A Mexico City police officer, said to be suffering from depression opened fire with his 9-mm. pistol in a crowded subway car on Thursday, September 21, 1995.

He fired 10 rounds on the rush hour passengers before being seized by an unarmed subway police officer.

Three passengers died and five others were wounded. The sister of the 22 year-old gunman said that Ernie had been very depressed and twice had tried to commit suicide.

Policeman Apologizes But Doesn't Admit Killings

OrlandoSentinel.com

September 29, 1995

MEXICO CITY — A policeman arrested in the deaths of three people and the wounding of six in a Mexico City subway car apologized after Thursday's shooting spree, saying he was feeling depressed. Ernesto Cruz Jimenez, 22, was arrested on the scene after a security guard captured him in a subway tunnel. A rookie with the police force of the adjacent state of Mexico, Cruz Jimenez had been missing since Tuesday when he failed to show up for work, authorities said. Cruz Jimenez gave investigators a confused statement in which he apologized but did not confess to the shootings.