U.S. Coast Guard
Part of the U.S. Coast Guard base at Kodiak, Alaska, is seen in this file photo.
Two U.S. Coast Guard members at a communications station in Kodiak, Alaska, were found shot to death on Thursday, officials said, leading to a lockdown of the base and nearby schools.
It was not clear if it was a murder-suicide or double homicide.
"It is possible that the suspect remains at large," Capt. Jesse Moore, the base commander, said in a statement.
"Since we don't have all the details, we strongly advise that all Kodiak residents to remain vigilant and to report any suspicious activity to local law enforcement officials," he added.
The base and nearby schools were on lockdown "until we can ensure no threat exists," the Coast Guard stated.
The communication station, which monitors May Day air and maritime traffic, is about two miles from the main base, Coast Guard spokesman Grant DeVuyst told msnbc.com. He wasn't sure if ID is required to enter the station, which has about 60 people working there, but noted that ID is required to enter the base and that only military police on the base are allowed to carry firearms.
FBI, state and local police were assigned to investigate, the Coast Guard said.
The names of the two dead were being withheld until notification of their families, and their genders were not immediately released.
Kodiak is an island about 250 miles southwest of Anchorage. About 6,300 people live on the island's main town of Kodiak, where the base is located. The base has about 1,000 Coast Guard personnel and several hundred civilian employees.
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