Shares of Live Nation (LYV) - Get Report slipped in after-hours trading Thursday after a congressional committee launched a probe of the live event ticketing industry.

The House Energy and Commerce Committee said in a press release it is "concerned about potentially unfair and deceptive practices occurring in the primary and secondary ticket marketplace."

The committee sought documents pertaining to the ticketing policies of Live Nation, Anschutz Entertainment Group (AEG), eBay's (EBAY) - Get Report StubHub, Vivid Seats, TicketNetwork, and Major League Baseball's Tickets.com.

The committee's concerns include "high, hidden fees, speculative tickets that harm unknowing customers, and 'white label' websites that may use practices to deceive consumers," according to the release.

Shares of Live Nation fell 43 cents, or 0.65%, to $65.73 in after-hours action. The stock fell 2.3% during the regular session.

Shares of eBay were unchanged after hours at $34.94.