9:30 a.m. (MDT)

Attorneys for Colorado theater shooter James Holmes have begun presenting their case aimed at showing he was legally insane when he opened fire on a packed movie premiere, killing 12 people and wounding 70.

The defense's first witness Thursday was a nurse, Jason Frank, who was working in the jail in November 2012, when Holmes ran head first into walls and fell backward on his bed. They showed a video of Holmes falling to ground and lying there for several minutes.

In questioning by a prosecutor, Frank said Holmes acted normally in other interactions before and after that video was made and noted that his cell has always been very neat.