MASSAPEQUA PARK - News 12 Long Island has obtained police dispatch recordings from the accidental fatal shooting of Special Operations officer Geoffrey Breitkopf.

In the recordings, panic could be heard after Breitkopf was killed at the hands of an MTA officer in Massapequa Park Saturday.

Police confirmed earlier that a retired NYPD cop who was at the scene the night Breitkopf was killed yelled that the Nassau officer had a gun.

Breitkopf was among county and MTA police officers who responded to a call about a knife-wielding suspect, 21-year-old Anthony DiGeronomo.

Sources say Breitkopf was wearing his badge and said "hello" to other Nassau cops. However, the head of the Nassau police union says as Breitkopf approached an MTA officer in plain clothes, with his department-issued rifle at his side, the retired cop yelled "gun," prompting the MTA officer to pull the trigger.

The Selden father of two was pronounced dead at the hospital.

Theresa Kelly, who first called 911 when DiGeronomo allegedly jumped on her car, says the retired officer was acting inappropriately at the scene.

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