Gosh, how fast they grow up. It was only Sunday that the public got its first rides on the newborn Metro Gold Line Eastside Extension. Little tyke was so shiny and innocent, chugging along from downtown to East L.A.

Then, on Monday, baby took her first urban steps. Two teenage suspects who had just robbed someone on the street nearby boarded the precious lil' chugger at the Little Tokyo/Arts District station in an attempt to get away. Aw.

The mugging was reported at 8:19 p.m. at Central Avenue and Second Street. The suspects were described as 18-year-olds. So sweet! Los Angeles police coordinated with the Los Angeles County Sheriff's Department, which patrols Metro trains, in an attempt to find the rambunctious teens. No dice.

We wish we had video of the whole caper for posterity. If we did the suspects might not have gotten away from baby's first robbery. The memories.

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