NEWTOWN, Conn. (CBS Connecticut/AP) — Investigators say that Newtown gunman Adam Lanza wore earplugs while he was killing 26 people at Sandy Hook Elementary School.

According to the Hartford Courant, authorities are puzzled as to why Lanza wore them during the massacre, speculating he might have used them as to not hear the children’s screams or from going to the shooting range with his mother, Nancy Lanza, multiple times.

“It’s just weird given what he was about to go do,” one official told the Courant. “It’s not like he had to worry about long-term protection of his hearing because he had to know he wasn’t coming back out of the building.”

The Courant also reports that Lanza changed magazines frequently, delving into the possibility he learned that by playing violent video games.

Lanza shot and killed his mother inside their Newtown home on Dec. 14 before driving to Sandy Hook Elementary School, shooting his way in and gunning down 20 first-graders and six school employees. He committed suicide as police arrived. The massacre claimed more lives that any school shooting in U.S. history, except for the 2007 Virginia Tech rampage that left 33 people dead.

Lanza’s father, Peter Lanza, of Stamford, Conn., claimed his son’s body last month, and there were “private arrangements,” according to the family spokesman. He would not elaborate on what those arrangements were.

Authorities have not offered a motive for the killings. State police say they have been exploring all aspects of Adam Lanza’s life including his education, family history and medical treatment for clues. Authorities have said it could take months to produce a final report on their investigation.

The state’s chief medical examiner has sought help from the University of Connecticut genetics department to study Lanza’s DNA and determine if there is any identifiable disease associated with his behavior.

(TM and © Copyright 2013 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2013 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)


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