(CNN) -- Saturday marks seven years since one of the deadliest mass shooting in modern U.S. history.
On Dec. 14, 2012, Adam Lanza opened fire on Sandy Hook Elementary School in Newtown, Connecticut.
20 children, all six or seven years old were killed. Six adults were also murdered, including three teachers, a principal, a therapist and a psychologist. Lanza shot and killed himself after the rampage.
In 2014, the families of nine of the children killed and one teacher who survived the attack filed a wrongful death suit against Remington, which makes the rifle used in the shooting.
This year the Connecticut Supreme Court ruled that the lawsuit can go forward. Remington filed an appeal with the U.S. Supreme Court. Last month, the court declined to take up the case.
A permanent memorial is set to be built and dedicated to the victims in Dec. 2021. Committee members said the design will be simpler than planned but maintain the essence of the original designs.
Changes include eliminating the planned pavilion, narrowing paths and limiting paved surfaces at the donated 5-acre site. The alterations will drop the estimated project budget from $10 million to $3.7 million.
There were concerns that the $10 million budget for the original design, which was chosen out of almost 200 submissions, wouldn't be approved by voters.
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