DETROIT (AP) -- Chrysler Group LLC says it has fired 13 plant workers a Detroit TV station caught drinking alcohol and smoking what appeared to be marijuana during breaks.

Chrysler manufacturing chief Scott Garberding told WJBK-TV in a Sept. 22 report that the automaker identified some of the workers from Detroit's Jefferson North plant on tape and was pursuing the others.

The automaker said then that it was suspending the workers. On Monday, Chrysler said it fired them.

In a statement, Chrysler said the workers violated its code of conduct.

Chrysler says two other workers got one-month unpaid layoffs.