Attorney General Eric Holder said Tuesday that he isn’t sure how many times he’s seized reporters’ records.

“I’m not sure how many of those cases … I have actually signed off on,” Holder said in an interview with NPR’s Carrie Johnson. “I take them very seriously. I know that I have refused to sign a few [and] pushed a few back for modifications.”

Holder’s answer serves as confirmation that the Justice Department’s secret seizure of The Associated Press’s phone records is not an isolated incident.