The National Zoo's Facebook page announced Monday that Cisco, the 23-year-old Andean bear died during an emergency veterinary procedure.

After an emergency procedure the team decided not to resuscitate him and let him pass humanely pain-free and quietly. The Facebook post explains Cisco's complications in more detail.

Cisco was born in 1993 at the Calgary Zoo and came to the National Zoo on loan from the Queens Zoo in New York in 2013.