NEWTOWN, Conn. (AP) — Bells are tolling in Newtown, Conn., to mark the anniversary of a shooting massacre that killed 26 people at Sandy Hook Elementary School.

The bells rang 26 times Saturday at St. Rose of Lima church in Newtown to honor each of the victims.

Gov. Dannel P. Malloy asked for houses of worship around the state to ring their bells at 9:30 a.m., the moment that Adam Lanza shot his way into the school. Malloy also called for flags to be lowered to half-staff around the state.

In a radio address Saturday, President Barack Obama called on the nation to help prevent future violence. He planned to observe a moment of silence at the White House.

Lanza killed 20 children and six educators before taking his own life.