A notorious white supremacist was executed this morning for the murder of a Missouri synagogue congregant.

Joseph Paul Franklin was put to death for the 1977 sniper shooting of Gerald Gordon outside of the Brith Sholom Kneseth Israel synagogue. Gordon was leaving a bar mitzvah service at the time.

Franklin also bombed a Chattanooga synagogue that same summer.

Franklin, 63, was originally scheduled for execution Tuesday evening, but two district court judges stayed the sentence over concerns for the type of drug planned to be used in the lethal injection.

The Supreme Court upheld the original sentence, however, leading to Franklin’s execution early this morning in Missouri.

Franklin was separately convicted for the murder of seven other victims, though he took credit for 20 additional murders across the US. The bar mitzvah murder was the only conviction that carried the death sentence.