Texas is scheduled to execute a man convicted of killing two men as part of a 2004 dispute with his boss at a strip club, and then years later prompted a massive lockdown of the state prison system when he used a cellphone smuggled into death row to threaten a lawmaker.

A Texas man who killed his strip club manager and another man, then later prompted a massive lockdown of the state prison system when he used a cellphone smuggled onto death row to threaten a lawmaker,

In his final statement, Richard Tabler asked for forgiveness from his victims’ family members, some of whom reportedly witnessed his death.