Mexico State Oil Giant Chief Not Speculating on Cause of Deadly Explosion

32 killed

A day after an explosion rocked its offices in Mexico City, Mexico's state-run oil giant Pemex says it's too early to speculate on the cause of the deadly blast.

At least 32 people -- 20 women and 12 men -- were killed in the explosion, Pemex chief Emilio Lozoya said at a news conference Friday. More than 100 were injured, including 52 who remain hospitalized.