A condemned inmate was executed in Texas Tuesday, after the U.S. Supreme Court rejected his lawyer's arguments that the man was mentally disabled.

Marvin Wilson was put to death by lethal injection for the 1992 murder of a police informant. According to authorities, the 54-year-old Wilson used his final statement to tell his family he loved them, before pleading “take me home Jesus, take me home Lord.”

In 2004, he was diagnosed as mentally retarded after his IQ was measured at 61, far below the accepted minimum intelligence level of 70. Wilson's lawyers challenged his sentence under a 2002 Supreme Court ruling that banned the execution of mentally impaired inmates, but allowed individual states to determine what constitutes mental impairment.

Texas authorities argued that Wilson's IQ test was incorrectly administered, and that it took other factors into consideration, including his ability to lead and to deceive others, proved he was not mentally impaired.

Wilson's lawyers said Texas authorities were using unscientific factors to make it harder for mentally impaired inmates to avoid being executed.

Wilson was the seventh inmate put to death this year in Texas, the most active death penalty state in the United States, and the 25th executed in the nation.