A lioness at the Indianapolis Zoo killed the father of her three cubs this week.
Zoo staff said in a statement on Friday that they heard “an unusual amount of roaring” at the lion’s cage Monday morning.
According to the Indianapolis Star, when zoo staff arrived, they saw the female lion, Zuri, in a fight with the adult male, Nyack.
“Zoo personnel made every effort to separate the lions, but Zuri held Nyack by the neck until he stopped moving,” the zoo said in a statement.
A necropsy on Nyack found the 10-year-old male had died from suffocation from injuries to the neck.
The lions had lived together for eight years and produced three cubs. Officials say there were no prior examples of aggression between the two.
The zoo said it is investigating the incident, but has no plans to change how they manage the lions.