Necropsy results show blue-green algae caused the deaths of three dogs playing near the St. John River more than a week ago.

The warning from New Brunswick's chief medical officer of health comes less than a week after three dogs died as a result of what is suspected to be a blue-green algae bloom.

The Marine Animal Response Society is keeping a close eye on the minke whale population in the Maritimes after at least 14 of them have been observed dead at sea or washed ashore since February.