https://apnews.com/8770b41db319d0fed4038348521931e2

WARSAW, Poland (AP) — Germany's environment minister said the mass die-off of fish in the Oder River is an ecological catastrophe and it isn't clear yet how long it will take the river to recover.

Steffi Lemke spoke Sunday at a news conference alongside her Polish counterpart, Anna Moskwa, after a meeting in Szczecin, a Polish city on the Oder River.