Musk announced Saturday that every day until Election Day, he would give $1 million to a randomly selected voter who signs a petition circulated by his super PAC.

Pennsylvania Gov. Josh Shapiro said Sunday that tech mogul Elon Musk’s plan to give money to registered voters in Pennsylvania is “deeply concerning” and “it’s something that law enforcement could take a look at.”

Shapiro’s comments on NBC News’ “Meet the Press” come one day after Musk announced in Pennsylvania that every day until Election Day, he would give $1 million to a random registered voter who signs a petition circulated by his super PAC “in favor of free speech and the right to bear arms.”

The super PAC has made signing the petition a prerequisite for attending rallies headlined by Musk, and on Saturday he surprised one rally attendee by giving away the first $1 million check onstage.