Following the prosecution's rebuttal case, the judge read the jury their initial instructions.

Court is then expected to break for lunch, with closing arguments currently scheduled for the afternoon.

The judge will then give the jury their final instructions before they begin deliberations.

The government rested its rebuttal case after a brief cross-examination of FBI special agent Erika Jensen, who testified about location and text message data relevant to the case.

Attorneys then gathered for another sidebar conference.

After a lengthy sidebar, overflow room cameras suddenly turned on to show prosecutors questioning a previous witness, FBI agent Erika Jensen, suggesting that the defense has rested its case and prosecutors are introducing a rebuttal case before the trial moves on to closing arguments.

If so, that would indicate that Hunter Biden did not testify in his own defense.

This morning's proceedings are underway.

Judge Maryellen Noreika began by reviewing with both parties motions by the defense to change proposed jury instructions.

The jury is expected to be brought back into court at 9 a.m. ET.

Defense attorney Abbe Lowell, in his closing argument, urged jurors to dispense with the government's "conjecture and suspicion" and find his client not guilty on all three counts.

"We have had Hunter's life in our hands" until now, Lowell said, referring to his legal team. "And now we have to give it to you."

Lowell repeatedly referred to prosecutors' case as a "magicians' trick" -- to "watch this hand and pay no attention to that one," as he said -- arguing that prosecutors failed to "fill in the gaps" about Hunter Biden's drug use around the time of his firearm purchase "because they don't have the proof."

Lowell also referred to prosecutors' strategy of showing Hunter Biden's pattern of drug use as an "accordion," meant to "compress" the timeline and make it seem to jurors that he was actively using drugs in October 2018, when he said on a government form that he was not addicted to drugs in order to purchase a Colt handgun.

The defense attorney also attacked some of the tactics prosecutors used, calling their treatment of Hunter Biden's daughter Naomi Biden "extraordinarily cruel" and saying that many of their questions and evidence were introduced with the intention of "embarrassing Hunter."

He also asked jurors to recall gaps in the recollections of Hunter Biden's then-girlfriend Hallie Biden, and suggested they should remember the immunity agreement she struck with prosecutors for her testimony.

"These are serious charges that will change Hunter's life," he said of the three felony charges the president's son faces, adding that "it's time to end this case."

Following Lowell's closing, the government was scheduled to have a short rebuttal, at which point the judge was to finish her jury instructions before the jury gets the case.