The D.C. stop of traveling hip-hop festival Rock the Bells has been canceled, according to two staffers at RFK Stadium.

The massive two-day festival booked by California promoter Guerilla Union was scheduled to take place at RFK this Saturday and Sunday, with headlining appearances from Kid Cudi, Wu-Tang Clan, Wale, J Cole, Girl Talk, and Black Hippy with Kendrick Lamar.

Ticketmaster has stopped selling tickets for the event; it’s listed as “canceled” on the ticket retailer’s website. Guerilla Union has not responded to a request for comment. One RFK staffer said a statement from the promoter is forthcoming, but declined to discuss the cancellation further.

This post will be updated as we learn more.

Update 2:46 p.m. Chinyere Hubbard, the vice president for communications and marketing of Events DC, RFK’s operator, confirms that the shows are canceled, but referred further questions to another Events DC communications staffer, who has not responded to a request for comment.

Update, 5:30 p.m.: Guerilla Union has put out a press release about Rock the Bells’ cancellation. The promoter says that both the D.C. and New York (technically New Jersey) legs of the tour have been canceled due to low ticket sales, and ticket refunds will be available at place of purchase. Read the release below.

Festival organizers, Guerilla Union, announced today that the upcoming Rock the Bells Festival tour-stop in Washington, DC and New York City are now cancelled due to a lack of ticket sales. The festival was slated to take place in Washington, DC this weekend (September 28 and 29) and New York City the following weekend (October 4 and 5).

Chang Weisberg, founder and owner of Guerilla Union states: “First and foremost, it is with great sadness and disappointment that we must cancel the Washington, DC and New York City Rock the Bells dates due to lack of ticket sales. I, along with our staff, the artists, and all of the sponsors, media partners, local promoters, and radio stations involved are thankful for our supporters and the fans that planned on attending. It’s extremely unfortunate that we can’t complete the last half of the 10th Anniversary Rock the Bells tour. We did everything in our power to save the show. Unfortunately, the financial loss would have been devastating. I am truly sorry we could not produce the show for all the fans who did buy their ticket in support of.”

Full refunds will be honored at the location where fans purchased their tickets. More details can be found on the festival’s official website at www.rockthebells.net.

Due to a reporting error, the original version of this post misspelled the name of promoter Guerilla Union. It has been corrected.