Explain this one: Group climbs into Brooklyn sewer.

Police are investigating a strange situation in Bensonhurst where a group of men was seen going into a sewer around 5:10 PM Monday.

A group lifted a manhole cover and climbed down into the sewer system. Witnesses told officers that three people went underground while another stayed above as a lookout.

Right now, investigators are still trying to figure out who went down there and why.

https://www.youtube.com/watch?v=3L-biZKnKKw