At least 100 people may speak at James Holmes’ sentencing

The Colorado movie theater shooter will be back in court, this time for a sentencing hearing.

The sentencing hearing is expected to last a few days.

Murder in the first degree carries a mandatory sentence of life in prison without the possibility of parole, and those sentences will be served consecutively.

James Holmes appears in court with his defense attorney Daniel King in June 2013 following the killing of 12 moviegoers in Aurora, Colorado, the year before.

A jury found Holmes guilty of 165 counts of first-degree murder, attempted murder and explosive charges stemming from the July 20, 2012, mass shooting inside a Denver-area multiplex during a midnight screening of a Batman movie. Samour must also decide the punishment for the other charges Holmes was convicted of. Holmes, a former graduate student in neuroscience, slipped into the darkened theater, threw gas canisters into the crowd and opened fire with a shotgun, assault rifle and semi-automatic pistol.

The department has four levels of security for inmates, and those serving a life sentence, like Holmes, are usually classified at the highest or second-highest security level, Jacobson said.

After the testimony from victims, lead prosecutor George Brauchler will present his sentencing argument, the statement said.

Following a trial that introduced nearly 3,000 pieces of evidence, Holmes was spared the death penalty because one juror voted against it.