Officials say the State Police dive team, with the help of the Broome County Sheriff's academy, recovered the shotgun believed to have been used to kill Erika Smith.
It took troopers several hours to find it in the freezing water of the Susquehanna River. New recruits found ammunition believed to be connected to the case in the thick brush along State Route 17 in the Town of Union.
One sergeant says these departments have been a huge help in the case.
"It's critical that we have the networking that we have with other agencies and the contacts that we have," said Johnson City Police Sgt. Michael Mason. "We couldn't take an investigation of this scope and close it out ourselves."
Officials are still waiting for the suspect, Corey Robinson, to be extradited from Georgia. He will be charged with second degree murder.