Jordan Feldstein has died unexpectedly at the age of 40.
He was the longtime manager of Adam Levine's band Maroon 5 and is the older brother of actor Jonah Hill, said the Daily Mail.
A spokeswoman for the band confirmed Saturday that Feldstein died unexpectedly Friday.
The Feldstein family said in a statement that Jordan Feldstein called 911 after experiencing shortness of breath Friday.
He had gone into cardiac arrest by the time paramedics arrived and died a short time later.