Billy Ray Irick, known as inmate #113945, has been moved to death watch status. 

According to the Department of Corrections, death watch is the three-day period before an execution when strict guidelines are in place for security and control of the offender. 

Irick was moved to a cell right next to the execution chamber Monday night at 11:30 p.m. He’s under 24-hour observation by a team of corrections officers. 

Billy Ray Irick is on death row for raping and killing a 7-year-old girl in East Tennessee in 1985.

His execution by lethal injection is scheduled for Thursday at 7 p.m. Central. 

His attorney’s originally argued that he’s too mentally ill to be executed by the state. Their latest appeal is based on the claim that the state’s lethal injection protocol is tantamount to torture. 

The Tennessee Supreme Court’s majority ruled against a stay of execution for Irick Monday night, and Gov. Bill Haslam decided against intervening.

Irick is expected to be the first person executed in Tennessee since 2009.

MORE: Governor Haslam’s statement