crime scene
This is a representational image showing a crime scene tape in Sunset Valley, Texas, on March 20, 2018. Getty Images/Scott Olson

On Wednesday, the trial of Hillsborough heiress Tiffany Li began nearing its conclusion as both the prosecution and defense presented their closing statements to the jury.

Prosecutors say that Li, 33, along with her boyfriend Kevah Bayat, 32, killed Li's ex-boyfriend Keith Green in April 2016 by luring him to her mansion and shooting him at the location. According to CBS San Francisco, San Mateo Deputy District Attorney Bryan Abanto told the jury that the murder occurred after Li convinced Green to come to her residence to discuss the two children they shared and matters pertaining to custody.

However, San Mateo County District Attorney Steve Wagstaffe acknowledged that there is "no smoking gun" that tied Li and Bayat to the crime. However, he said that he believed there were enough "pieces of a puzzle" that the jury could find them guilty.

"The evidence all points towards the motive, the intent, the resources all belonging to the two defendants," Wagstaffe said.

Among those pieces of evidence was the last ping from Green's cell phone, which came from Li's home, reports the Mercury News. Additionally, Li and Bayat's own phones placed them in Green's last known location.

"They had the motive to do it, and their phones gave them away," Abanto stated.

One such piece of the puzzle is the fact that Olivier Adella, a mutual friend of the couple, has previously said he was the one who disposed of Green's body and allegedly accepted payment from Li and Bayat to do so. Following Green's disappearance, investigators recovered over $35,000 in cash and Green's watch inside Adella's apartment.

As for the defense, they reportedly used an optical illusion of a woman turning away or an old woman looking down during the trial. This tool was used to cast doubt on the evidence and testimonies that they heard by showing how things can be interpreted in different ways.

"There seems to be more evidence consistent with it being a failed kidnapping than it being a murder; that something went wrong," stated defense Attorney Geoff Carr.

It is unknown when an official verdict will be reached by the jury.