The movie had been scheduled to premiere today in Pittsburgh but the production house says "out of honour and respect of families" they won't screen the movie, said The Hollywood Reporter.
"Due to the terrible tragedy in Newtown, Connecticut, and out of honor and respect for the families of the victims whose lives were senselessly taken, we are postponing tomorrow's Pittsburgh premiere of Jack Reacher. Our hearts go out to all those who lost loved ones," the production house said.
On Friday morning, gunman Adam Lanza, 20, went on a rampage at Sandy Hook Elementary School in Newtown, leaving 26 people dead, including 20 children