Topeka ? Topeka Zoo director Mike Coker says a gorilla at the zoo died from an aortic aneurysm.

M’Bili, a male Lowland gorilla was found dead Saturday morning. Coker says the 17-year-old gorilla hadn’t shown any signs of illness or distress.

Kansas State University veterinarians conducted a necropsy, or animal autopsy, on the gorilla. The death is the latest setback at the zoo, which has been severely criticized by federal inspectors for lax veterinary care and inadequate record keeping after several animals died in recent years.

M’Bili was the second gorilla in four years to die at the Topeka Zoo before its typical life expectancy, which is 40 to 50 years. In October 2005, a gorilla named Kuba died after zoo workers shot it with a tranquilizer dart as it was being prepared to move out of state.