Mauritania’s environment ministry says about 245 pelican chicks and two dozen adult pelicans have died from H5N1 bird flu in a Mauritanian national park bordering an area in northern Senegal that was hit by the virus.

The birds’ bodies were discovered in Diawling National Park’s protected wetlands, which sit on the Mauritanian side of the Senegal River delta and host over 250 species of birds.

A statement from the ministry says the park has been closed and all tourism activities in the area suspended

The deaths follow the discovery on Jan. 23 of hundreds of dead pelicans at a Senegalese bird sanctuary on the other side of the river. They were later confirmed to have died from H5N1.

Earlier in January, Senegal reported an outbreak of the virus on a poultry farm in Thies region about 120 miles south, resulting in the culling of about 100,000 chickens.