ANCHORAGE, Alaska - The Latest on the capsizing of a boat in Alaska's Glacier Bay National Park:

2:45 p.m.

The National Park Service says a father and son died in the capsizing of a boat at Alaska's Glacier Bay National Park.

Spokesman Tom VandenBerg says 75-year-old Larry Roger McWilliams and 48-year-old Gary Roger McWilliams died late Monday afternoon.

Their hometowns were not immediately available. The elder McWilliams carried an Oregon driver's license, and the younger man was from California.

The men were pulled from the water unconscious and could not be revived by CPR.

VandenBerg says the cause of the capsizing is not known.

Park Service personnel Tuesday planned to attempt to recover the boat.

VandenBerg says the agency was alerted to the capsizing because one of the survivors managed to swim to shore and flag down another vessel.

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2 p.m.

The National Park Service says two people died Monday when a fishing boat capsized in Alaska's Glacier Bay National Park.

The 21-foot privately owned boat was carrying six people. One person suffering from severe hypothermia was flown by the Coast Guard to Juneau for treatment.

The Park Service says rangers late Monday afternoon received word that the aluminum fishing vessel was seen overturned near Strawberry Island 10 miles from park headquarters at Bartlett Cove.

Large and small boats headed to the area to search.

The Park Service says a charter operator pulled two people from the water and found a third on the shoreline.

A Park Service research vessel found the person with severe hypothermia.

The crew of a tour vessel pulled two people from the water. They were pronounced dead at park headquarters.

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12:30 p.m.

The Coast Guard says a boat with six people aboard has capsized in Glacier Bay.

Chief Petty Officer Kip Wadlow says a Coast Guard helicopter assisted in rescuing one person aboard Monday. He did not have details on the person's condition.

The fate of the other five was not immediately known.

Wadlow says the primary agency responding to the capsizing was the National Park Service, which did not have anyone immediately available to answer questions Tuesday morning.

Wadlow says good Samaritan vessels assisted in the response.

Coast Guard Petty Officer Meredith Manning says the Park Service transported the survivor to Gustavus and the helicopter flew the person to Juneau.

The person was transferred to paramedics and taken to Bartlett Regional Hospital.

News from © The Associated Press, 2016