A Florida woman who believes the Sandy Hook Elementary school shooting is a hoax was arrested Monday on charges she threatened the parent of a child killed in the 2012 school shooting.

Lucy Richards, 57, of Tampa, Fla., was indicted on four counts of transmitting threats, according to a statement from the United States Attorney Southern District of Florida.

The Sandy Hook shooting is approaching its fourth anniversary. On Dec. 14, 2012, 20 children and six school staffers were fatally shot at Sandy Hook Elementary in Newtown, Conn. By Adam Lanza, 20. Lanza later fatally shot himself.

According to authorities, Richards made a series of death threats against the parent of a child who was killed in the shooting. The parent now lives in South Florida was identified in a statement as Len Pozner.

Richards is accused of telling the parent “you gonna die, death is coming to you real soon," according to federal court documents. The statements were made in January. She also wrote, "Look behind you it's death," according to the documents.