The suspected gunman in the deadly Colorado Springs LGBTQ nightclub shooting that killed five people last month has been formally charged with 305 counts, including first-degree murder, attempted first-degree murder, assault and bias-motivated crimes.

Driving the news: Anderson Lee Aldrich, the suspect in the Club Q shooting, appeared in person at a court hearing Tuesday in El Paso County District Court, where prosecutors filed the charges.

• The formal charges include 10 counts of first-degree murder, more than 70 counts of attempted first-degree murder, 48 counts of bias-motivated crimes — otherwise known as hate crimes — and dozens of counts of first-degree assault, the Colorado Sun reported.
• "This case is going to be — continue to be — investigated for some time, I would suspect," El Paso County District Attorney Michael Allen told El Paso County District Judge Michael McHenry.
• "It's somewhat likely that we will amend charges, to add or maybe even subtract, depending on — as we identify potentially more victims in this case."

The big picture: Aldrich was arrested last month on initial charges of five counts of first-degree murder and five charges of committing a bias-motivated crime. The list of charges was expected to change once formally filed.

• Aldrich did not address the court during Tuesday's hearing.

Go deeper: What we know about the 5 Club Q shooting victims