Updated

Lawyers for Texas death row inmate Christopher Wilkins are looking to the U.S. Supreme Court to keep him from becoming the first prisoner executed in the nation this year.

The 48-year-old Wilkins is set for lethal injection Wednesday evening for a double slaying in Fort Worth in 2005. The fatal shootings stemmed from a $20 drug deal in which he thought he was buying a rock of crack cocaine. The rock really was a piece of gravel.

Wilkins described the slayings to jurors at his murder trial in 2008 and said he didn't care if jurors gave him the death penalty.

His lawyers are arguing to the high court that Wilkins had poor legal help at his trial and during earlier appeals. State attorneys argue courts already have rejected similar appeals.