Some Super Bowl fans may be in for a nasty surprise.

Thursday Federal Officials seized nearly $5 million worth of phony NFL swag and cracked down on websites selling fake tickets to the Super Bowl in a nation wide sweep.

Federal Officials shut down nearly 300 foreign websites. Most of the illegal operations were based in China.

Fake items include hats, jerseys, and jackets. Arrests have been made in New York and New Jersey for the distribution of fake tickets.

The confiscated merchandise is worth around $4.8 million. Experts say the fake products don't hold up to the real thing.

John Mortin, Immigration and Customs Enforcement, explains how you should be careful what you buy, “If you're going to spend this kind of money on a jersey, for the love of God spend it on the real thing and make sure to get something that lasts. If you were to look at some the things we seize the stitching is poor the logos aren't quite right. You know they're cheap and they are ultimately going to fall apart on you.”

Officials are still investigating illegal ticket sales in the Indianapolis area.