NEWTOWN -- The motive behind the Sandy Hook Elementary School shootings remains a mystery and State Police have found no connection between gunman Adam Lanza and the school.

Lt. J. Paul Vance made the announcement during a short press conference after 1 p.m. Vance: said they will uncover "all" evidence.

It reinforces school officials assertion that Nancy Lanza, shooter's murdered mother, had no connection to school

Vance says State Police computer specialists are going through Lanza equipment.

Vance says he doesn't know where report originated on shattered computer hard drive in Lanza home.

He said furniture is being moved from Sandy Hook Elementary School.