A Westchester Knicks employee was among the five people killed in a helicopter crash in the East River on Monday.

The team has confirmed that Tristan Hill was onboard the helicopter Sunday.

Hill worked as a basketball operations assistant. 

The pilot was taking five people on a photo tour of the city when the chopper crashed. All five passengers died, the pilot survived.

He told investigators that a passenger's bag might have hit an emergency switch that cuts off fuel to the engine. The NTSB is working to determine the exact cause.