AJ Allmendinger has been indefinitely suspended by NASCAR after his B sample has confirmed his positive test for a stimulant after the Kentucky race on June 30. Sam Hornish, who has driven the Penske No. 22 the past two races in Allmendinger's absence will continue to fill in at Indianapolis.
After his A sample tested positive after Kentucky, NASCAR temporarily suspended Allmendinger.
"On July 24, Allmendinger was found to have violated Sections 12-1 (actions detrimental to stock car racing) and 19 (NASCAR's substance abuse policy) of the 2012 NASCAR rule book," NASCAR said in the release.
"As outlined in the rule book, NASCAR next will provide Allmendinger a letter outlining a process for reinstatement. By agreeing to the letter, he will be allowed to participate in the Road to Recovery Program."
