1.   And although the cyanide levels were decreasing, the effects were still visible today.

2.   Cyanide levels came down to less than half the initial levels after more water was released into the river.

3.   Serban Petru, head of the national water authority, said it released extra water into the Siret to diminish cyanide levels.

4.   Ukrainian authorities in the Odessa region made the decision after determining that cyanide levels had dropped to a safe level, the report said.