US

Internet search on 'rational insanity' done on Holmes' computer, detectives testify

FILE -This June 4, 2013 file photo shows Aurora theater shooting suspect James Holmes in court in Centennial, Colo. Holmes is returning to court as his lawyers challenge possible trial testimony about computer analysis and data. A judge is set to hear arguments about the issue beginning Thursday, Oct. 10, 2013. Holmes is accused of killing 12 people and injuring 70 when he opened fire on a packed movie theater in the Denver suburb of Aurora in 2012. (AP Photo/The Denver Post, Andy Cross, Pool, File)

FILE -This June 4, 2013 file photo shows Aurora theater shooting suspect James Holmes in court in Centennial, Colo. Holmes is returning to court as his lawyers challenge possible trial testimony about computer analysis and data. A judge is set to hear arguments about the issue beginning Thursday, Oct. 10, 2013. Holmes is accused of killing 12 people and injuring 70 when he opened fire on a packed movie theater in the Denver suburb of Aurora in 2012. (AP Photo/The Denver Post, Andy Cross, Pool, File)  (The Associated Press)

An investigator says an Internet search on the words "rational insanity" had been done on a computer belonging to Colorado theater shooting defendant James Holmes.

Detective Michael Leiker testified in a pre-trial hearing Thursday. He said he found evidence of the search on a computer he examined during the investigation of the July 2012 shooting at a suburban Denver theater.

Leiker says the search was done on the Bing search engine, but he offered no other details.

It wasn't clear who did the search or when it was done. Neither prosecutors nor defense lawyers asked him to elaborate.

Holmes has pleaded not guilty by reason of insanity to multiple counts of murder and attempted murder. He's accused of killing 12 people and injuring 70.

Prosecutors are seeking the death penalty.