BROWNVILLE, Neb. (AP) — Another erroneous warning has been sent about a supposed problem at the Cooper Nuclear Station in southeast Nebraska.

Nebraska Public Power District says the warning was sent around 3:50 p.m. Sunday to cellular customers by the National Weather Service. The district says a correction was sent about 10 minutes later and a correction message was placed on the weather service website.

The district says that as part of its emergency response efforts, the weather service will broadcast alert messages to the media, various agencies and the public. On Sunday weather service personnel were updating the wording programmed into a computer system, and the message was mistakenly issued.

On July 24 an erroneous evacuation warning about a hazardous material spill was broadcast in Nemaha, a village that sits near the plant.