Hans-Christian Stroebele says the meeting happened today. He posted on Twitter a picture of himself with Snowden.
The lawmaker from Germany's opposition Greens is a prominent critic of the NSA's alleged actions. He told ARD television that Snowden "made clear he knows a great deal" and he would be prepared to travel to Germany and testify "but the circumstances would have to be cleared up."
Germany is seeking answers from US authorities to allegations Chancellor Angela Merkel's cellphone was monitored.