A child has died after an incident involving a Peloton treadmill, the company’s CEO says.

Peloton chief executive John Foley disclosed the death on Thursday in a statement to owners of the Tread+ treadmill.

“I recently learned about a tragic accident involving a child and the Tread+, resulting in, unthinkably, a death,” Foley wrote.

“While we are aware of only a small handful of incidents involving the Tread+ where children have been hurt, each one is devastating to all of us at Peloton, and our hearts go out to the families involved.”