A grand jury delivered an indictment Thursday against President Joe Biden's son Hunter over allegations he unlawfully owned a gun while addicted to drugs.

The indictment, brought by special counsel David Weiss, included three charges against Hunter Biden related to gun possession.

The indictment came as expected after Weiss revealed in a court filing this month that he planned to obtain one by Sept. 29, in line with the Speedy Trial Act.

Weiss initially planned to strike a plea deal with Hunter Biden over three charges, the gun charge and two misdemeanor tax charges, but the deal fell apart in July when a federal judge raised questions at a plea hearing about how the deal would affect prosecutors' ability to bring future charges against the younger Biden.

The deal was two-pronged and involved Hunter Biden pleading guilty to the two misdemeanors for failing to pay his taxes in 2017 and 2018 and entering into a pretrial diversion agreement to avoid one felony gun charge.

The judge's questions at the plea hearing resulted in Hunter Biden's defense team and Weiss reaching what prosecutors described as an "impasse" over the terms of the agreement, signaling an indictment and possible trial were forthcoming.

The indictment followed the Republican-led House announcing Tuesday it had launched an impeachment inquiry into Joe Biden based on allegations that he had been inappropriately involved in his son's foreign business dealings while serving as vice president.

As part of that inquiry, Republicans have criticized the Department of Justice for "slow-walking" its investigation of the younger Biden and bringing what they view as weak charges against him. They are now meeting behind-the-scenes with federal investigators involved in the Hunter Biden case and questioning them on why Weiss did not bring other charges, including tax violations for the 2014 and 2015 tax year and a Foreign Agents Registration Act violation.

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Weiss, for his part, has maintained that his investigation into Hunter Biden is ongoing, but it remains unclear whether the special counsel plans to bring any other charges against him.

This story is developing.