State Police are looking for a man in connection to the stabbing of a trooper Sunday on the Empire State Plaza. They say they're looking for a teenager who has ties to Grand Street in Albany. Erin Vannella has more.

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ALBANY, N.Y. -- State Police are searching for a man they say is connected to the stabbing of Trooper Rodney Smith at the Empire State Plaza Concourse in Albany.

State and city police say witnesses and surveillance video prompted them to look for Eric Green, 18, in the Grand Street area of Albany. They are not calling him a suspect, but they say they want to ask him about what happened.

State Police say Smith was on security detail when a man they're describing as being homeless and in his twenties approached him and started a conversation. Smith was checking the suspect's ID when troopers say the man stabbed Smith in the neck with a kitchen knife, took his dispatch radio and ran off.

Troopers say their conversations with relatives and acquaintances of Green convinced them he's connected to the incident.

"Mr. Green does have ties to the downstate area. We have no reason to believe he's there, or here, so we're keeping both options open. So either option is a viable option. But again, through our investigation, we know that he has ties not only in the Albany area, on Grand Street, specific, but also to the downstate area as well,” New York State Police Public information Officer Trooper Mark Cepiel said.

Trooper Smith was treated at Albany Med, released and is recovering.

If you have seen Eric Green, police ask you to call them.