(CNN) Two Dutch friends said they just wanted a good look at the mysterious Area 51 before leaving the US, but they ended up in a Nevada jail, instead.

Ties Granzier, 20, and Govert Charles Wilhelmus Jacob Sweep, 21, were arrested about three miles deep into the Nevada National Security Site, the Nye County Sheriff's Office said.

The site is near Area 51 , which has been the focus of conspiracy theories for decades alleging the US government keeps evidence about aliens and UFOs there. Someone recently created a Facebook event page seeking people to storm the site this Friday.

But the two men say never planned to participate in that.

"We didn't have any intention to storm it because we leave on day before the actual storming dates, and we just wanted... to go there," Sweep told CNN affiliate KTNV . They just wanted to get a good view of it, he said.

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