A man who raped and killed an 11-month-old girl in 1997 was put to death by the state Thursday in Oklahoma’s first execution in nine months.

Charles Frederick Warner, 47, was pronounced dead at 7:28 p.m. at the Oklahoma State Penitentiary in McAlester.

Warner’s execution via a deadly three-drug cocktail was the first state-sanctioned killing of an inmate since the controversial execution of Clayton Lockett on April 29.

Lockett’s execution went awry as doctors struggled to set a proper IV, and it took more than 40 minutes for him to die. That led the state to stay executions while it investigated what went wrong.