NEWTOWN, Conn. - New details have emerged surrounding the deadly massacre at Sandy Hook Elementary School in Newtown, Connecticut.

Investigators say gunman Adam Lanza was wearing ear plugs when he gunned down 20 children and six educators last month.

It is not clear if he was used to wearing ear plugs from the gun range or used them to drown out the screams of his victims.

Police have yet to release a motive for the deadly shooting spree.