Troy Gentry of country duo Montgomery Gentry is mourning the death of his brother Keith. The country rockers shared the news with fans on Facebook on Sunday (June 29).

“I'd like to thank you all so much for your outpouring of thoughts and prayers,” Gentry says. “We appreciate your kindness and respect of our family time as we grieve the loss of my brother Keith."

The cause of Keith Gentry’s death was not made public, but comments made on Facebook indicate a sudden death on Saturday night (June 28). Also unclear is if Troy is older or younger than Keith, and how close the two were. They were the only kids born to the late Patricia Ann Gentry, but she also had a stepdaughter.

“We'll make sure Troy sees any well wishes you'd like to pass along,” someone from Montgomery Gentry’s team added to the Facebook post. So far, more 2,200 people have commented.