Toronto Police say a 13-year-old girl was arrested after being found lying on top of a subway train at the Davisville yard.

Photos of the girl were posted to social media and brought to the attention of the TTC.

Police say the teen will not be charged. Instead, she'll be put into a Youth Pre-charge Diversion program.

Spokesperson Brad Ross says she was brought down safely.

"That is an incredibly dangerous thing for her to have done," Ross says. "That train could have moved off at any time and she could have fallen off...or been struck as it passed under a bridge or through the tunnels."

He couldn't say how she got up there in the first place.

Ross says there was a very brief disruption in service.