Chilling recordings of 911 calls from the scene of a triple murder-suicide that took place in Bayonne two weeks ago have been released by officials.

The Hudson County prosecutor also released new details about the gun that was used by Adepso Collado to kill his wife, two kids, and himself. The prosecutor's office says that the legal owner of the gun, a 45-calibre semi-automatic, had no connection to Collado. Officials say it's still a mystery how the gun got into Collado's hands.

The owner of the gun told officials he didn't realize his gun was missing until he was contacted by investigators.

Bayonne triple murder-suicide 911 callsCops: Suicide note found in Bayonne killingsPolice: Infant, 3 others killed in Bayonne murder-suicideOfficials: 4 dead, 1 hurt in apparent murder-suicide in Bayonne