HALLAM, Neb. (AP) — State wildlife officials say low oxygen levels have caused a major die-off of fish at Olive Creek Lake near Hallam in southeastern Nebraska.

The Nebraska Game and Parks Commission says the die-off was reported Thursday, and investigators found extensive numbers of dead largemouth bass, bluegill, channel catfish and other species.

Investigators say recent, dense algal blooms combined with little wind to stir the water resulted in low oxygen levels that led to the die-off.

Officials say visitors to Olive Creek State Recreation Area would find a shore ringed with dead fish, and fishing at the lake is not recommended.

An evaluation of the fish kill and remaining fish population will be conducted later this summer or fall.

Restocking, if necessary, likely would not take place until 2019.