A lioness named Zuri killed the father of her three cubs at the Indianapolis Zoo. The lion named Nyack was injured in a physical incident earlier this week. In a statement released on Friday, October 19, zoo staff said that they heard an unusual amount of roaring at the lion’s outdoor yard on Monday, October 15 and when they arrived to check, they saw female lion, Zuri in a physical confrontation with their adult male lion, Nyack.

Zoo staff made all efforts to separate the lions but Zuri has held Nyack by the neck until he stopped moving. The veterinary at the zoo conducted a necropsy on the male lion and found out that the 10-year-old Nyack died out of the suffocation from the neck injuries.

Indianapolis Zoo took to micro-blogging site Twitter to announce the news. The post reads, “Our Zoo family is sad to announce 10-yr-old male lion Nyack has died. Earlier this week he was injured in a physical incident with female lion Zuri. We will conduct a thorough review to attempt to understand what may have led to this.”

The two lions were housed together at the zoo from last eight years and produced three cubs. According to the officials, there were no previous incidents of aggression between Zuri and Nyack.

In a statement, the zoo said, “We know many people loved visiting Nyack. He was a magnificent male lion and left his legacy in his three cubs.”

The Indianapolis zoo also said that it will investigate the incident and there is no change in the managing of the lions. The attack occurred before the zoo opened to the public on Monday morning.