Did Adam P. Lanza ever do telephonic threats ?

I remember that in the 1.500 pages of the FBI's documents that there was someone who phoned people and said:
"This is Adam Lanza and I'm going to kill you"
In one of these calls, it is even reported that a toiled being flushed could be heard, followed by a clicking sound (Possibly of a gun).
The thing is, these calls were done days after the massacre at Sandy Hook (The first time this story was brought up on the documents it is said that the call was made the 16/12/2012, 2 days after Sandy Hook), but I also remember that in the documents it is said that some of these calls were made before the massacre (I think something around the 10/12/2012).
Does anyone else have any additional information on this ?

it was probably some kid messing with people, adam would be too nervous to make threats, i remember seeing that in the 1.5k too

eldigato wrote:

it was probably some kid messing with people, adam would be too nervous to make threats, i remember seeing that in the 1.5k too

The weird thing is that I remember that some of the threats were made before Sandy Hook.
Maybe I am wrong or some witnesses gave involuntarily false information, I don't know.

CALU wrote:

eldigato wrote:

it was probably some kid messing with people, adam would be too nervous to make threats, i remember seeing that in the 1.5k too

The weird thing is that I remember that some of the threats were made before Sandy Hook.
Maybe I am wrong or some witnesses gave involuntarily, I don't know.

Or the witnesses could be lying.