Federal fisheries officials reported Tuesday that there still has been no sightings of a juvenile killer whale last seen swimming in an Alaska river about 285 miles southwest of Anchorage.
NOAA Fisheries spokeswoman Julie Speegle said in a statement that a necropsy has started on one of the two adult orcas whose carcasses were found Saturday in the Nushagak River.
The whale's body was towed to a beach near Dillingham, where some local residents were assisting in the necropsy.
Veterinarians will conduct the second necropsy Wednesday. Officials were deciding Tuesday whether to also tow that body or have veterinarians travel upriver to the carcass.
Necropsy results possibly could be released by the end of the week.
The juvenile whale was last seen Saturday, swimming downriver.