Update, Saturday 5:40 p.m.

Gaithersburg Police are continuing their investigation into the Friday night collision between a van and two 12-year-old girls on Route 355 near Lakeforest Boulevard, police spokesman Dan Lane said. The two girls were hospitalized in serious condition late Friday; a third girl with them, who was about the same age, was not harmed.

The driver of the van remained on the scene and cooperated with investigators, Lane said. The girls were crossing against the signal, which could influence whether the driver or pedestrians are charged, he said.

So far, no charges have been filed. Montgomery County Fire and Rescue Service Capt. Oscar Garcia said he would likely not have an update on the girls' conditions until Monday.

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Two 12-year-old girls are in serious condition tonight after being struck by a van on Rt. 355 near Lakeforest Boulevard, officials said.

The girls were taken to a pediatric trauma center for treatment, according to Assistant Chief Scott Graham, a spokesman for Montgomery County Fire and Rescue Service. Few detials are available, and officials cannot confirm if the striking vehicle remained at the scene.