HOUSTON (AP) A congressional committee has launched an investigation into the promoter of the Astroworld music festival in Houston , in which 10 people were killed during a massive crowd surge and attendees were packed so tightly that many could not breathe or move their arms.

The House Oversight and Reform Committee sent a letter Wednesday to Live Nation Entertainment Inc.s president and CEO, Michael Rapino, asking for information about the companys role in the Nov. 5 festival and concert by rap superstar Travis Scott .

Information the committee requested included details about security, crowd control and mass casualty incident planning; details about any pre-show briefings by Live Nation or is subsidiaries on any safety concerns; and what steps the concert promoter will take to prevent injuries or deaths at future events.

Recent reports raise serious concerns about whether your company took adequate steps to ensure the safety of the 50,000 concertgoers who attended Astroworld Festival, the committee said in the letter.