A Pennsylvania state senior was arrested at home on Tuesday, Sept. 17, after investigators said they found suspected images of child pornography on his personal computer and cellphone.

Accordingly, Sen. Mike Folmer 63, has been charged with three counts of possession of child pornography and one count of criminal use of a communication facility. On Wednesday, he submitted his letter of resignation to Republican colleagues in Harrisburg, according to leadership in the state chamber.

An explicit image was discovered on his personal computer and two other suspected images of child pornography were found on his cellphone.

Folmer told investigators that he had received the initial image through his Tumblr blog, according to court documents. But prosecutors said Folmer had used the screen name hoser44 to upload the image to the social media site in December 2017.

Tumblr flagged the image to the National Center for Missing and Exploited Children in February, court documents state. Authorities issued subpoenas earlier this year to Yahoo, AT&T Wireless, and Comcast to recover account details provided by Tumblr, NPR reported

Pennsylvania Attorney General Josh Shapiro said in a statement, “No one is above the law, no matter what position of power they hold. I will continue to work to protect children and hold those who abuse them accountable.”

Last year, Folmer opposed a bill that would have made it easier for survivors of child sex abuse to sue their perpetrators by extending the statute of limitations. Folmer opposed the effort to allow victims to sue predators decades after alleged abuse on constitutional grounds.

He was an instrumental voice in building Republican support for legalizing medical marijuana in Pennsylvania, an effort that became law in 2016. His advocacy made some in the state capital dub him “Marijuana Mike,” according to NPR.