Radiohead announced earlier this week that they would embark on a world tour this Summer, in addition to a series of previously announced festival dates. Fans and critics alike expressed excitement and all was well, until now.

The headlining shows all sold out within a matter of minutes, and tickets began appearing for sale on secondary sites for thousands of dollars. This has led singer Thom Yorke to express his frustration and warn fans of the dangers of purchasing tickets off secondary markets.

Radiohead wrote a series of tweets addressing the situation. The band encouraged fans to check the original rules of each venue if they planned on buying resale tickets, as not to risk being denied entry. Lead singer Thom Yorke also posted a tweet from his personal account, with many speculating that the post was related to the ticket situation. Check out the posts below

All headline shows are now sold out. Despite the strict rules, tickets inevitably will find their way onto secondary ticketing sites…

— Radiohead (@radiohead) March 18, 2016

If you’re thinking of buying a ticket from a secondary sites PLEASE PLEASE carefully check the original rules of the venue concerned…

— Radiohead (@radiohead) March 18, 2016

MANY OF THE TICKETS WILL BE NAMED & STRINGENT ID CHECKS WILL BE IN PLACE; YOU RISK BEING REFUSED ENTRY TO THE VENUE https://t.co/lbrOF9kmw3

— Radiohead (@radiohead) March 18, 2016

We hope you understand the need to put such measures in place to give more fans a chance to get to the shows

— Radiohead (@radiohead) March 18, 2016

I’m as fucked off as you are . and am only human .

— Thom Yorke (@thomyorke) March 18, 2016

In other news, Yorke recently offered one lucky (and wealthy) fan the chance to own a piece of history. In order to raise money for Oxfam, the anti-poverty charity, he is auctioning off handwritten lyrics to Radiohead’s hit song “Airbag.” The lyrics are written on the inside cover of Yorke’s personal copy of William Blake’s Songs of Innocence and Experience, and the book is heavily annotated. The current asking price is nearing $2,500, so fans better get moving if they want this deal!

If you’re intent on seeing Radiohead this Summer, be sure to heed the band’s warnings and check the venue rules, bring valid ID and be wary of potential scammers. Check out the tour dates below

Radiohead 2016 Tour Dates

05/20 Amsterdam – Heineken Music Hall
05/21 Amsterdam – Heineken Music Hall
05/23 Paris – Le Zenith
05/24 Paris – Le Zenith
05/26 London – Roundhouse
05/27 London – Roundhouse
05/28 London – Roundhouse
06/26 New York – Madison Square Garden
06/27 New York – Madison Square Garden
07/04 Los Angeles – Shrine Auditorium
07/08 Los Angeles – Shrine Auditorium
10/03 Mexico City – Palacio De Los Deportes
10/04 Mexico City – Palacio De Los Deportes