The San Diego Zoo Safari Park announced over the weekend that one of the last four northern white rhinoceroses left in existence has died.

ABC News noted that the 41-year-old rhino named Nola was suffering from a bacterial infection, among other health issues and on Sunday the decision was made to euthanize her.

"Nola was an iconic animal, not only at the San Diego Zoo Safari Park, but worldwide," the park said in a statement.

Nola had surgery to remove an abscess two weeks ago, but although most of the infection was thought to be taken out, her health began to decline.

She was the zoo’s only northern white rhino and had been a resident there since 1989. The three other rhinos left in the world- one male and two females- all live in Africa, the San Diego Times Union stated.

Nola was unable to get pregnant despite efforts to breed her with former partners Noti and Angalifu. Noti died in 2007 and Angalifu just last year.

The disappearance of the northern white rhino population is attributed to poaching.