Batman-Schütze James Holmes
Denver - Prosecutors have filed a motion to add 10 new charges against accused Colorado gunman James Holmes, arrested following the July movie theater shootings that killed 12 people, and have asked to amend 17 others, the Denver Post reported on Wednesday.

The judge in the case has ordered nearly all court filings be sealed, and it was not clear what the additional charges were from a register of court actions, the Denver Post reported.

The newspaper did note that a separate motion was filed to amend 16 counts of attempted murder and one count of crime-of-violence sentence enhancement against Holmes, although it did not reveal how they would be amended.

Holmes, a former neuroscience graduate student, is accused of opening fire on July 20 at a midnight screening of the Batman movie The Dark Knight Rises in Aurora, a Denver suburb. Twelve people were killed and 58 were wounded in the attack.

Reporting by Keith Coffman