The information comes from previous reports:
“Relying on Mr. Taylor’s confession, the police have recovered two buried safe boxes, one in Sandy Hook containing about $7,000 and
another in Shark River Park containing Ms. Stern’s clothing.“ (BBM)
They Helped Look for Her. Now They’re Accused in Her Murder.
“Taylor later confessed to the killing, bringing authorities to two buried safes in Sandy Hook and Shark River Park in Wall.
Authorities said one contained the cash from the robbery and another had pieces of Stern's clothing.“ (BBM)
A year later, Sarah Stern's dad reflects on loss
I’m not sure why the evidence hasn’t been presented yet.
Perhaps LM talks about the clothes in his confession, and the prosecution is going to introduce the evidence at the same time as the tape that his friend recorded:
“Liam McAtasney first told Anthony Curry about his plans to rob and murder former high school classmate Sarah Stern on Thanksgiving night, 2016.
[SBM]
McAtasney even told Curry that he and his roommate, Preston Taylor, had taken ‘trial runs’ over the bridge to practice disposing of the body without being detected, the court papers said.
[SBM]
Then, when McAtasney contacted him to ask if police had spoken with him about Stern’s disappearance, Curry began to suspect that McAtasney had actually gone through with his ghastly plan, prosecutors said in their court papers.
[SBM]
‘A.C. wanted to participate,’ [Detective Brian] Weisbrot [of the Monmouth County Prosecutor’s Office] testified at a hearing before Superior Court Judge Richard W. English on Jan. 10. ‘A.C. was terrified of Liam McAtasney. He felt if he didn’t participate in this, Liam McAtasney would kill him or hurt his family.’
Curry proceeded to communicate with McAtasney, saving their exchanges of Snapchat and text messages for detectives to review.
[SBM]
The pair then exchanged Snapchat messages and agreed to meet later that night in Bradley Beach.
That’s where McAtasney is said to have told Curry that he planned Stern’s murder for six months, that he choked her for a half hour while her dog watched her die, that he stole the victim’s safe and that he did, in fact, throw her body off the bridge with Taylor's assistance, according to the court papers.
McAtasney’s words and image were unwittingly being recorded by Curry.
[SBM]”
Ruling on covert Sarah Stern murder confession on the docket